these are the files in the folder these are the following code of each files ALL

Question

these are the files in the folder these are the following code of each files
ALLSTATES.JAVA


package stateInformation;
import java.io.BufferedReader; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStreamReader; import java.text.DecimalFormat;
public class AllStates { private State[] states; //holds an array of State objects //go through week 4 lecture notes to study this topic
//DO NOT MODIFY public AllStates(String filename) throws IOException { load(filename); }
/* * DO NOT MODIFY - This method reads information about the states from the file * and stores it in the array of State objects */ public void load(String filename) throws IOException{ FileInputStream inputStream1 = new FileInputStream(filename); BufferedReader bufferedReader1 = new BufferedReader(new InputStreamReader(inputStream1));
int count = 0; while(bufferedReader1.readLine() != null) { count++; } bufferedReader1.close();
FileInputStream inputStream2 = new FileInputStream(filename); BufferedReader bufferedReader2 = new BufferedReader(new InputStreamReader(inputStream2)); states = new State[count]; String line = null; for(int i=0; i < count; i++) { line = bufferedReader2.readLine(); String tokens[] = line.split(","); String abbrev = tokens[0]; String name = tokens[1]; int population = Integer.parseInt(tokens[2]); states[i] = new State(abbrev, name, population); } bufferedReader2.close(); }
/** * 10 marks * Function description: print a list of all states * @return: String representing the states * The example of the format: * "NSW (New South Wales) - Population: 7704300 * VIC (Victoria) - Population: 6039100 * SA (South Australia) - Population: 1706500" */ public String toString() { return ""; //to be completed }
/** * * Function description: Find the state name by abbreviation in the dataset * , abbreviation * @return: the state name if we can find the state name by the input abbreviation, * else return "No state with given abbreviation exists" */ package stateInformation;
import java.io.BufferedReader; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStreamReader; import java.text.DecimalFormat;
public class AllStates { private State[] states; //holds an array of State objects //go through week 4 lecture notes to study this topic
//DO NOT MODIFY public AllStates(String filename) throws IOException { load(filename); }
/* * DO NOT MODIFY - This method reads information about the states from the file * and stores it in the array of State objects */ public void load(String filename) throws IOException{ FileInputStream inputStream1 = new FileInputStream(filename); BufferedReader bufferedReader1 = new BufferedReader(new InputStreamReader(inputStream1));
int count = 0; while(bufferedReader1.readLine() != null) { count++; } bufferedReader1.close();
FileInputStream inputStream2 = new FileInputStream(filename); BufferedReader bufferedReader2 = new BufferedReader(new InputStreamReader(inputStream2)); states = new State[count]; String line = null; for(int i=0; i < count; i++) { line = bufferedReader2.readLine(); String tokens[] = line.split(","); String abbrev = tokens[0]; String name = tokens[1]; int population = Integer.parseInt(tokens[2]); states[i] = new State(abbrev, name, population); } bufferedReader2.close(); }
/** * 10 marks * Function description: print a list of all states * @return: String representing the states * The example of the format: * "NSW (New South Wales) - Population: 7704300 * VIC (Victoria) - Population: 6039100 * SA (South Australia) - Population: 1706500" */ public String toString() { return ""; //to be completed }
/** * * Function description: Find the state name by abbreviation in the dataset * , abbreviation * @return: the state name if we can find the state name by the input abbreviation, * else return "No state with given abbreviation exists" */ public String getNameByAbbreviation(String abbreviation) { return ""; //to be completed }
/** * * Function description: find whether the given state is in the dataset * , name * @return: If the state exists in the dataset, return true, else return false */ public boolean exists(String name) { return false; //to be completed }

/** * * Function description: get the state that has the lowest population * * @return: the state name with the minimum population */ public String leastPopulatedState() { return ""; //to be completed }
/** * 15 marks * Function description: get the average population of all states * * @return: the average population */ public double averagePopulation() { return 0; //to be completed }
/** * * Function description: find the states that the population is higher than 10000000 (10 million) * * @return: the number of state with the population more than 10000000 (10 million) */ public int getLargeStateCount() { return 0; //to be completed
}
/** * * Function description: find the states that the population is less than 1000000 (1 million) * * @return: the number of state with the population less than 1000000 (1 million) */ public int getSmallStateCount() { return 0; //to be completed }
/** * * Function description: determine the number of states that the names start with initial passed * @param: initial: first letter of required states * @return: return the number of state where the state names start with initial passed */ public int countStatesCountByInitial(char initial) { return 0; //to be completed } /** * * Function description: find the states that the names start with initial passed * @param: initial: first letter of required states * @return: return the states where the state names start with initial passed */ public State[] getStatesCountByInitial(char initial) { //you'll need to determine the size of the resulting array, populate it, and return it return new State[] {}; //to be completed } /** * * re-arrange the states in decreasing order of population */ public void arrageByPopulation() { //to be completed } } public String getNameByAbbreviation(String abbreviation) { return ""; //to be completed }
/** * * Function description: find whether the given state is in the dataset * , name * @return: If the state exists in the dataset, return true, else return false */ public boolean exists(String name) { return false; //to be completed }

/** * * Function description: get the state that has the lowest population * * @return: the state name with the minimum population */ public String leastPopulatedState() { return ""; //to be completed }
/** * 15 marks * Function description: get the average population of all states * * @return: the average population */ public double averagePopulation() { return 0; //to be completed }
/** * * Function description: find the states that the population is higher than 10000000 (10 million) * * @return: the number of state with the population more than 10000000 (10 million) */ public int getLargeStateCount() { return 0; //to be completed
}
/** * * Function description: find the states that the population is less than 1000000 (1 million) * * @return: the number of state with the population less than 1000000 (1 million) */ public int getSmallStateCount() { return 0; //to be completed }
/** * * Function description: determine the number of states that the names start with initial passed * @param: initial: first letter of required states * @return: return the number of state where the state names start with initial passed */ public int countStatesCountByInitial(char initial) { return 0; //to be completed } /** * * Function description: find the states that the names start with initial passed * @param: initial: first letter of required states * @return: return the states where the state names start with initial passed */ public State[] getStatesCountByInitial(char initial) { //you'll need to determine the size of the resulting array, populate it, and return it return new State[] {}; //to be completed } /** * * re-arrange the states in decreasing order of population */ public void arrageByPopulation() { //to be completed } } //you'll need to determine the size of the resulting array, populate it, and return it return new State[] {}; //to be completed } /** * * re-arrange the states in decreasing order of population */ public void arrageByPopulation() { //to be completed } }



   ALLSTATESTEST.JAVA


package stateInformation;
import static org.junit.Assert.*; import java.io.*; import java.text.*; import java.util.*; import org.junit.*;
//DO NOT MODIFY THIS CLASS
public class AllStatesTest { private static final int mark = 8; private static int marks = 0; private static String feedback = ""; private AllStates usStates; private AllStates australiaStates; @Before public void beforeEachTest() throws IOException { usStates = new AllStates("data/USAStateData.txt"); australiaStates = new AllStates("data/AustraliaStateData.txt"); }
@Test @Graded(marks = mark, description = "toString") public void testToString() { assertEquals("AL (Alabama) - Population: 4860545 " + "AK (Alaska) - Population: 741522 " + "AZ (Arizona) - Population: 6908642 " + "AR (Arkansas) - Population: 2988231 " + "CA (California) - Population: 39296476 " + "CO (Colorado) - Population: 5530105 " + "CT (Connecticut) - Population: 3587685 " + "DE (Delaware) - Population: 952698 " + "DC (District of Columbia) - Population: 684336 " + "FL (Florida) - Population: 20656589 " + "GA (Georgia) - Population: 10313620 " + "HI (Hawaii) - Population: 1428683 " + "ID (Idaho) - Population: 1680026 " + "IL (Illinois) - Population: 12835726 " + "IN (Indiana) - Population: 6634007 " + "IA (Iowa) - Population: 3130869 " + "KS (Kansas) - Population: 2907731 " + "KY (Kentucky) - Population: 4436113 " + "LA (Louisiana) - Population: 4686157 " + "ME (Maine) - Population: 1330232 " + "MD (Maryland) - Population: 6024752 " + "MA (Massachusetts) - Population: 6823721 " + "MI (Michigan) - Population: 9933445 " + "MN (Minnesota) - Population: 5525050 " + "MS (Mississippi) - Population: 2985415 " + "MO (Missouri) - Population: 6091176 " + "MT (Montana) - Population: 1038656 " + "NE (Nebraska) - Population: 1907603 " + "NV (Nevada) - Population: 2939254 " + "NH (New Hampshire) - Population: 1335015 " + "NJ (New Jersey) - Population: 8978416 " + "NM (New Mexico) - Population: 2085432 " + "NY (New York) - Population: 19836286 " + "NC (North Carolina) - Population: 10156689 " + "ND (North Dakota) - Population: 755548 " + "OH (Ohio) - Population: 11622554 " + "OK (Oklahoma) - Population: 3921207 " + "OR (Oregon) - Population: 4085989 " + "PA (Pennsylvania) - Population: 12787085 " + "RI (Rhode Island) - Population: 1057566 " + "SC (South Carolina) - Population: 4959822 " + "SD (South Dakota) - Population: 861542 " + "TN (Tennessee) - Population: 6649404 " + "TX (Texas) - Population: 27904862 " + "UT (Utah) - Population: 3044321 " + "VT (Vermont) - Population: 623354 " + "VI (Virginia) - Population: 8414380 " + "WA (Washington) - Population: 7280934 " + "WV (West Virginia) - Population: 1828637 " + "WI (Wisconsin) - Population: 5772917 " + "WY (Wyoming) - Population: 584910 " + "PR (Puerto Rico) - Population: 3406520 ", usStates.toString()); assertEquals("NSW (New South Wales) - Population: 7704300 " + "VIC (Victoria) - Population: 6039100 " + "SA (South Australia) - Population: 1706500 " + "QL (Queensland) - Population: 4827000 " + "TAS (Tasmania) - Population: 518500 " + "WA (Western Australia) - Population: 2613700 " + "ACT (Australian Capital Territory) - Population: 397397 " + "NT (Northern Territory) - Population: 244000 ", australiaStates.toString()); marks+=mark; feedback=feedback+mark+" marks: toString passed "; }
@Test @Graded(marks = mark, description = "getNameByAbbreviation") public void testGetNameByAbbreviation() { assertEquals("Alabama", usStates.getNameByAbbreviation("AL")); assertEquals("Delaware", usStates.getNameByAbbreviation("DE")); assertEquals("Florida", usStates.getNameByAbbreviation("FL")); assertEquals("Georgia", usStates.getNameByAbbreviation( "GA")); assertEquals("Idaho", usStates.getNameByAbbreviation("ID")); assertEquals("Louisiana", usStates.getNameByAbbreviation("LA")); assertEquals("Delaware", usStates.getNameByAbbreviation("DE")); assertEquals("Nebraska", usStates.getNameByAbbreviation("NE"));
assertEquals("Pennsylvania", usStates.getNameByAbbreviation("PA")); assertEquals("South Carolina", usStates.getNameByAbbreviation("SC")); assertEquals("Victoria", australiaStates.getNameByAbbreviation("VIC")); marks+=mark; feedback=feedback+mark+" marks: getNameByAbbreviation passed "; } @Test @Graded(marks = mark, description = "exists") public void testExists() { assertTrue(usStates.exists("Alabama")); assertTrue(usStates.exists("Georgia")); assertTrue(usStates.exists("Kansas")); assertTrue(usStates.exists("Minnesota")); assertTrue(usStates.exists("Nevada")); assertFalse(australiaStates.exists("Nevada"));
assertTrue(australiaStates.exists("Tasmania")); //even though it might be easy to forget sometimes, it's still there
marks+=mark; feedback=feedback+mark+" marks: exists passed "; }
@Test @Graded(marks = mark, description = "leastPopulatedState") public void testLeastPopulatedState() throws IOException { assertEquals("Wyoming", usStates.leastPopulatedState()); assertEquals("Northern Territory", australiaStates.leastPopulatedState()); marks+=mark; feedback=feedback+mark+" marks: leastPopulatedState passed "; } @Test @Graded(marks = mark, description = "average") public void testAveragePopulation() { assertEquals(6284854.9, usStates.averagePopulation(), 0.01); assertEquals(3006312.125, australiaStates.averagePopulation(), 0.01); marks+=mark; feedback=feedback+mark+" marks: average passed "; } @Test @Graded(marks = mark, description = "getLargeStateCount") public void testGetLargeStateCount() { assertEquals(9, usStates.getLargeStateCount()); assertEquals(0, australiaStates.getLargeStateCount()); marks+=mark; feedback=feedback+mark+" marks: getLargeStateCount passed "; } @Test @Graded(marks = 15, description = "getSmallStateCount") public void testGetSmallStateCount() { assertEquals(7, usStates.getSmallStateCount()); assertEquals(3, australiaStates.getSmallStateCount()); marks+=mark; feedback=feedback+mark+" marks: getSmallStateCount passed "; }
@Test @Graded(marks = mark, description = "countStatesCountByInitial") public void testCountStatesCountByInitial() { assertEquals(4, usStates.countStatesCountByInitial('A')); assertEquals(0, usStates.countStatesCountByInitial('Z')); assertEquals(2, australiaStates.countStatesCountByInitial('N')); assertEquals(1, australiaStates.countStatesCountByInitial('V'));
marks+=mark; feedback=feedback+mark+" marks: countStatesCountByInitial passed "; } @Test @Graded(marks = mark, description = "getStatesCountByInitial") public void testGetStatesCountByInitial() { State[] result = usStates.getStatesCountByInitial('A'); assertEquals(4, result.length); assertEquals("[AL (Alabama) - Population: 4860545, AK (Alaska) - Population: 741522, AZ (Arizona) - Population: 6908642, AR (Arkansas) - Population: 2988231]", Arrays.toString(result)); result = usStates.getStatesCountByInitial('X'); assertEquals(0, result.length); assertEquals("[]", Arrays.toString(result)); result = australiaStates.getStatesCountByInitial('N'); assertEquals(2, result.length); assertEquals("[NSW (New South Wales) - Population: 7704300, NT (Northern Territory) - Population: 244000]", Arrays.toString(result)); marks+=mark; feedback=feedback+mark+" marks: getStatesCountByInitial passed "; }
@Test @Graded(marks = mark, description = "arrangeByPopulation") public void testArrangeByPopulation() { usStates.arrageByPopulation(); assertEquals("CA (California) - Population: 39296476 " + "TX (Texas) - Population: 27904862 " + "FL (Florida) - Population: 20656589 " + "NY (New York) - Population: 19836286 " + "IL (Illinois) - Population: 12835726 " + "PA (Pennsylvania) - Population: 12787085 " + "OH (Ohio) - Population: 11622554 " + "GA (Georgia) - Population: 10313620 " + "NC (North Carolina) - Population: 10156689 " + "MI (Michigan) - Population: 9933445 " + "NJ (New Jersey) - Population: 8978416 " + "VI (Virginia) - Population: 8414380 " + "WA (Washington) - Population: 7280934 " + "AZ (Arizona) - Population: 6908642 " + "MA (Massachusetts) - Population: 6823721 " + "TN (Tennessee) - Population: 6649404 " + "IN (Indiana) - Population: 6634007 " + "MO (Missouri) - Population: 6091176 " + "MD (Maryland) - Population: 6024752 " + "WI (Wisconsin) - Population: 5772917 " + "CO (Colorado) - Population: 5530105 " + "MN (Minnesota) - Population: 5525050 " + "SC (South Carolina) - Population: 4959822 " + "AL (Alabama) - Population: 4860545 " + "LA (Louisiana) - Population: 4686157 " + "KY (Kentucky) - Population: 4436113 " + "OR (Oregon) - Population: 4085989 " + "OK (Oklahoma) - Population: 3921207 " + "CT (Connecticut) - Population: 3587685 " + "PR (Puerto Rico) - Population: 3406520 " + "IA (Iowa) - Population: 3130869 " + "UT (Utah) - Population: 3044321 " + "AR (Arkansas) - Population: 2988231 " + "MS (Mississippi) - Population: 2985415 " + "NV (Nevada) - Population: 2939254 " + "KS (Kansas) - Population: 2907731 " + "NM (New Mexico) - Population: 2085432 " + "NE (Nebraska) - Population: 1907603 " + "WV (West Virginia) - Population: 1828637 " + "ID (Idaho) - Population: 1680026 " + "HI (Hawaii) - Population: 1428683 " + "NH (New Hampshire) - Population: 1335015 " + "ME (Maine) - Population: 1330232 " + "RI (Rhode Island) - Population: 1057566 " + "MT (Montana) - Population: 1038656 " + "DE (Delaware) - Population: 952698 " + "SD (South Dakota) - Population: 861542 " + "ND (North Dakota) - Population: 755548 " + "AK (Alaska) - Population: 741522 " + "DC (District of Columbia) - Population: 684336 " + "VT (Vermont) - Population: 623354 " + "WY (Wyoming) - Population: 584910 ", usStates.toString());
australiaStates.arrageByPopulation(); assertEquals("NSW (New South Wales) - Population: 7704300 " + "VIC (Victoria) - Population: 6039100 " + "QL (Queensland) - Population: 4827000 " + "WA (Western Australia) - Population: 2613700 " + "SA (South Australia) - Population: 1706500 " + "TAS (Tasmania) - Population: 518500 " + "ACT (Australian Capital Territory) - Population: 397397 " + "NT (Northern Territory) - Population: 244000 ", australiaStates.toString());
marks+=mark; feedback=feedback+mark+" marks: arrangeByPopulation passed "; }
//log reporting @AfterClass public static void wrapUp() throws IOException { System.out.println(feedback.substring(0,feedback.length()-1)); System.out.println("--------------------------------------------"); System.out.println("Total: "+marks+" out of 80"); String timeStamp = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss").format(new Date()); File file = new File("report"+timeStamp+".txt"); FileWriter writer = new FileWriter(file); writer.write(feedback.substring(0,feedback.length()-1)+" "); writer.write("-------------------------------------------- "); writer.write(marks+" "); writer.flush(); writer.close(); } } package stateInformation;
import static org.junit.Assert.*; import java.io.*; import java.text.*; import java.util.*; import org.junit.*;
//DO NOT MODIFY THIS CLASS
public class AllStatesTest { private static final int mark = 8; private static int marks = 0; private static String feedback = ""; private AllStates usStates; private AllStates australiaStates; @Before public void beforeEachTest() throws IOException { usStates = new AllStates("data/USAStateData.txt"); australiaStates = new AllStates("data/AustraliaStateData.txt"); }
@Test @Graded(marks = mark, description = "toString") public void testToString() { assertEquals("AL (Alabama) - Population: 4860545 " + "AK (Alaska) - Population: 741522 " + "AZ (Arizona) - Population: 6908642 " + "AR (Arkansas) - Population: 2988231 " + "CA (California) - Population: 39296476 " + "CO (Colorado) - Population: 5530105 " + "CT (Connecticut) - Population: 3587685 " + "DE (Delaware) - Population: 952698 " + "DC (District of Columbia) - Population: 684336 " + "FL (Florida) - Population: 20656589 " + "GA (Georgia) - Population: 10313620 " + "HI (Hawaii) - Population: 1428683 " + "ID (Idaho) - Population: 1680026 " + "IL (Illinois) - Population: 12835726 " + "IN (Indiana) - Population: 6634007 " + "IA (Iowa) - Population: 3130869 " + "KS (Kansas) - Population: 2907731 " + "KY (Kentucky) - Population: 4436113 " + "LA (Louisiana) - Population: 4686157 " + "ME (Maine) - Population: 1330232 " + "MD (Maryland) - Population: 6024752 " + "MA (Massachusetts) - Population: 6823721 " + "MI (Michigan) - Population: 9933445 " + "MN (Minnesota) - Population: 5525050 " + "MS (Mississippi) - Population: 2985415 " + "MO (Missouri) - Population: 6091176 " + "MT (Montana) - Population: 1038656 " + "NE (Nebraska) - Population: 1907603 " + "NV (Nevada) - Population: 2939254 " + "NH (New Hampshire) - Population: 1335015 " + "NJ (New Jersey) - Population: 8978416 " + "NM (New Mexico) - Population: 2085432 " + "NY (New York) - Population: 19836286 " + "NC (North Carolina) - Population: 10156689 " + "ND (North Dakota) - Population: 755548 " + "OH (Ohio) - Population: 11622554 " + "OK (Oklahoma) - Population: 3921207 " + "OR (Oregon) - Population: 4085989 " + "PA (Pennsylvania) - Population: 12787085 " + @Test @Graded(marks = mark, description = "toString") public void testToString() { assertEquals("AL (Alabama) - Population: 4860545 " + "AK (Alaska) - Population: 741522 " + "AZ (Arizona) - Population: 6908642 " + "AR (Arkansas) - Population: 2988231 " + "CA (California) - Population: 39296476 " + "CO (Colorado) - Population: 5530105 " + "CT (Connecticut) - Population: 3587685 " + "DE (Delaware) - Population: 952698 " + "DC (District of Columbia) - Population: 684336 " + "FL (Florida) - Population: 20656589 " + "GA (Georgia) - Population: 10313620 " + "HI (Hawaii) - Population: 1428683 " + "ID (Idaho) - Population: 1680026 " + "IL (Illinois) - Population: 12835726 " + "IN (Indiana) - Population: 6634007 " + "IA (Iowa) - Population: 3130869 " + "KS (Kansas) - Population: 2907731 " + "KY (Kentucky) - Population: 4436113 " + "LA (Louisiana) - Population: 4686157 " + "ME (Maine) - Population: 1330232 " + "MD (Maryland) - Population: 6024752 " + "MA (Massachusetts) - Population: 6823721 " + "MI (Michigan) - Population: 9933445 " + "MN (Minnesota) - Population: 5525050 " + "MS (Mississippi) - Population: 2985415 " + "MO (Missouri) - Population: 6091176 " + "MT (Montana) - Population: 1038656 " + "NE (Nebraska) - Population: 1907603 " + "NV (Nevada) - Population: 2939254 " + "NH (New Hampshire) - Population: 1335015 " + "NJ (New Jersey) - Population: 8978416 " + "NM (New Mexico) - Population: 2085432 " + "NY (New York) - Population: 19836286 " + "NC (North Carolina) - Population: 10156689 " + "ND (North Dakota) - Population: 755548 " + "OH (Ohio) - Population: 11622554 " + "OK (Oklahoma) - Population: 3921207 " + "OR (Oregon) - Population: 4085989 " + "PA (Pennsylvania) - Population: 12787085 " + "RI (Rhode Island) - Population: 1057566 " + "SC (South Carolina) - Population: 4959822 " + "SD (South Dakota) - Population: 861542 " + "TN (Tennessee) - Population: 6649404 " + "TX (Texas) - Population: 27904862 " + "UT (Utah) - Population: 3044321 " + "VT (Vermont) - Population: 623354 " + "VI (Virginia) - Population: 8414380 " + "WA (Washington) - Population: 7280934 " + "WV (West Virginia) - Population: 1828637 " + "WI (Wisconsin) - Population: 5772917 " + "WY (Wyoming) - Population: 584910 " + "PR (Puerto Rico) - Population: 3406520 ", usStates.toString()); assertEquals("NSW (New South Wales) - Population: 7704300 " + "VIC (Victoria) - Population: 6039100 " + "SA (South Australia) - Population: 1706500 " + "QL (Queensland) - Population: 4827000 " + "TAS (Tasmania) - Population: 518500 " + "WA (Western Australia) - Population: 2613700 " + "ACT (Australian Capital Territory) - Population: 397397 " + "NT (Northern Territory) - Population: 244000 ", australiaStates.toString()); marks+=mark; feedback=feedback+mark+" marks: toString passed "; } "RI (Rhode Island) - Population: 1057566 " + "SC (South Carolina) - Population: 4959822 " + "SD (South Dakota) - Population: 861542 " + "TN (Tennessee) - Population: 6649404 " + "TX (Texas) - Population: 27904862 " + "UT (Utah) - Population: 3044321 " + "VT (Vermont) - Population: 623354 " + "VI (Virginia) - Population: 8414380 " + "WA (Washington) - Population: 7280934 " + "WV (West Virginia) - Population: 1828637 " + "WI (Wisconsin) - Population: 5772917 " + "WY (Wyoming) - Population: 584910 " + "PR (Puerto Rico) - Population: 3406520 ", usStates.toString()); assertEquals("NSW (New South Wales) - Population: 7704300 " + "VIC (Victoria) - Population: 6039100 " + "SA (South Australia) - Population: 1706500 " + "QL (Queensland) - Population: 4827000 " + "TAS (Tasmania) - Population: 518500 " + "WA (Western Australia) - Population: 2613700 " + "ACT (Australian Capital Territory) - Population: 397397 " + "NT (Northern Territory) - Population: 244000 ", australiaStates.toString()); marks+=mark; feedback=feedback+mark+" marks: toString passed "; }
@Test @Graded(marks = mark, description = "getNameByAbbreviation") public void testGetNameByAbbreviation() { assertEquals("Alabama", usStates.getNameByAbbreviation("AL")); assertEquals("Delaware", usStates.getNameByAbbreviation("DE")); assertEquals("Florida", usStates.getNameByAbbreviation("FL")); assertEquals("Georgia", usStates.getNameByAbbreviation( "GA")); assertEquals("Idaho", usStates.getNameByAbbreviation("ID")); assertEquals("Louisiana", usStates.getNameByAbbreviation("LA")); assertEquals("Delaware", usStates.getNameByAbbreviation("DE")); assertEquals("Nebraska", usStates.getNameByAbbreviation("NE"));
assertEquals("Pennsylvania", usStates.getNameByAbbreviation("PA")); assertEquals("South Carolina", usStates.getNameByAbbreviation("SC")); assertEquals("Victoria", australiaStates.getNameByAbbreviation("VIC")); marks+=mark; feedback=feedback+mark+" marks: getNameByAbbreviation passed "; } @Test @Graded(marks = mark, description = "exists") public void testExists() { assertTrue(usStates.exists("Alabama")); assertTrue(usStates.exists("Georgia")); assertTrue(usStates.exists("Kansas")); assertTrue(usStates.exists("Minnesota")); assertTrue(usStates.exists("Nevada")); assertFalse(australiaStates.exists("Nevada"));
assertTrue(australiaStates.exists("Tasmania")); //even though it might be easy to forget sometimes, it's still there
marks+=mark; feedback=feedback+mark+" marks: exists passed "; } @Test @Graded(marks = mark, description = "getNameByAbbreviation") public void testGetNameByAbbreviation() { assertEquals("Alabama", usStates.getNameByAbbreviation("AL")); assertEquals("Delaware", usStates.getNameByAbbreviation("DE")); assertEquals("Florida", usStates.getNameByAbbreviation("FL")); assertEquals("Georgia", usStates.getNameByAbbreviation( "GA")); assertEquals("Idaho", usStates.getNameByAbbreviation("ID")); assertEquals("Louisiana", usStates.getNameByAbbreviation("LA")); assertEquals("Delaware", usStates.getNameByAbbreviation("DE")); assertEquals("Nebraska", usStates.getNameByAbbreviation("NE"));
assertEquals("Pennsylvania", usStates.getNameByAbbreviation("PA")); assertEquals("South Carolina", usStates.getNameByAbbreviation("SC")); assertEquals("Victoria", australiaStates.getNameByAbbreviation("VIC")); marks+=mark; feedback=feedback+mark+" marks: getNameByAbbreviation passed "; } @Test @Graded(marks = mark, description = "exists") public void testExists() { assertTrue(usStates.exists("Alabama")); assertTrue(usStates.exists("Georgia")); assertTrue(usStates.exists("Kansas")); assertTrue(usStates.exists("Minnesota")); assertTrue(usStates.exists("Nevada")); assertFalse(australiaStates.exists("Nevada"));
assertTrue(australiaStates.exists("Tasmania")); //even though it might be easy to forget sometimes, it's still there
marks+=mark; feedback=feedback+mark+" marks: exists passed "; }
@Test @Graded(marks = mark, description = "leastPopulatedState") public void testLeastPopulatedState() throws IOException { assertEquals("Wyoming", usStates.leastPopulatedState()); assertEquals("Northern Territory", australiaStates.leastPopulatedState()); marks+=mark; feedback=feedback+mark+" marks: leastPopulatedState passed "; } @Test @Graded(marks = mark, description = "average") public void testAveragePopulation() { assertEquals(6284854.9, usStates.averagePopulation(), 0.01); assertEquals(3006312.125, australiaStates.averagePopulation(), 0.01); marks+=mark; feedback=feedback+mark+" marks: average passed "; } @Test @Graded(marks = mark, description = "getLargeStateCount") public void testGetLargeStateCount() { assertEquals(9, usStates.getLargeStateCount()); assertEquals(0, australiaStates.getLargeStateCount()); marks+=mark; feedback=feedback+mark+" marks: getLargeStateCount passed "; } @Test @Graded(marks = 15, description = "getSmallStateCount") public void testGetSmallStateCount() { assertEquals(7, usStates.getSmallStateCount()); assertEquals(3, australiaStates.getSmallStateCount()); marks+=mark; feedback=feedback+mark+" marks: getSmallStateCount passed "; }
@Test @Graded(marks = mark, description = "countStatesCountByInitial") public void testCountStatesCountByInitial() { assertEquals(4, usStates.countStatesCountByInitial('A')); assertEquals(0, usStates.countStatesCountByInitial('Z')); assertEquals(2, australiaStates.countStatesCountByInitial('N')); assertEquals(1, australiaStates.countStatesCountByInitial('V'));
marks+=mark; feedback=feedback+mark+" marks: countStatesCountByInitial passed "; } @Test @Graded(marks = mark, description = "leastPopulatedState") public void testLeastPopulatedState() throws IOException { assertEquals("Wyoming", usStates.leastPopulatedState()); assertEquals("Northern Territory", australiaStates.leastPopulatedState()); marks+=mark; feedback=feedback+mark+" marks: leastPopulatedState passed "; } @Test @Graded(marks = mark, description = "average") public void testAveragePopulation() { assertEquals(6284854.9, usStates.averagePopulation(), 0.01); assertEquals(3006312.125, australiaStates.averagePopulation(), 0.01); marks+=mark; feedback=feedback+mark+" marks: average passed "; } @Test @Graded(marks = mark, description = "getLargeStateCount") public void testGetLargeStateCount() { assertEquals(9, usStates.getLargeStateCount()); assertEquals(0, australiaStates.getLargeStateCount()); marks+=mark; feedback=feedback+mark+" marks: getLargeStateCount passed "; } @Test @Graded(marks = 15, description = "getSmallStateCount") public void testGetSmallStateCount() { assertEquals(7, usStates.getSmallStateCount()); assertEquals(3, australiaStates.getSmallStateCount()); marks+=mark; feedback=feedback+mark+" marks: getSmallStateCount passed "; }
@Test @Graded(marks = mark, description = "countStatesCountByInitial") public void testCountStatesCountByInitial() { assertEquals(4, usStates.countStatesCountByInitial('A')); assertEquals(0, usStates.countStatesCountByInitial('Z')); assertEquals(2, australiaStates.countStatesCountByInitial('N')); assertEquals(1, australiaStates.countStatesCountByInitial('V'));
marks+=mark; feedback=feedback+mark+" marks: countStatesCountByInitial passed "; } @Test @Graded(marks = mark, description = "getStatesCountByInitial") public void testGetStatesCountByInitial() { State[] result = usStates.getStatesCountByInitial('A'); assertEquals(4, result.length); assertEquals("[AL (Alabama) - Population: 4860545, AK (Alaska) - Population: 741522, AZ (Arizona) - Population: 6908642, AR (Arkansas) - Population: 2988231]", Arrays.toString(result)); result = usStates.getStatesCountByInitial('X'); assertEquals(0, result.length); assertEquals("[]", Arrays.toString(result)); result = australiaStates.getStatesCountByInitial('N'); assertEquals(2, result.length); assertEquals("[NSW (New South Wales) - Population: 7704300, NT (Northern Territory) - Population: 244000]", Arrays.toString(result)); marks+=mark; feedback=feedback+mark+" marks: getStatesCountByInitial passed "; } @Test @Graded(marks = mark, description = "getStatesCountByInitial") public void testGetStatesCountByInitial() { State[] result = usStates.getStatesCountByInitial('A'); assertEquals(4, result.length); assertEquals("[AL (Alabama) - Population: 4860545, AK (Alaska) - Population: 741522, AZ (Arizona) - Population: 6908642, AR (Arkansas) - Population: 2988231]", Arrays.toString(result)); result = usStates.getStatesCountByInitial('X'); assertEquals(0, result.length); assertEquals("[]", Arrays.toString(result)); result = australiaStates.getStatesCountByInitial('N'); assertEquals(2, result.length); assertEquals("[NSW (New South Wales) - Population: 7704300, NT (Northern Territory) - Population: 244000]", Arrays.toString(result)); marks+=mark; feedback=feedback+mark+" marks: getStatesCountByInitial passed "; }
@Test @Graded(marks = mark, description = "arrangeByPopulation") public void testArrangeByPopulation() { usStates.arrageByPopulation(); assertEquals("CA (California) - Population: 39296476 " + "TX (Texas) - Population: 27904862 " + "FL (Florida) - Population: 20656589 " + "NY (New York) - Population: 19836286 " + "IL (Illinois) - Population: 12835726 " + "PA (Pennsylvania) - Population: 12787085 " + "OH (Ohio) - Population: 11622554 " + "GA (Georgia) - Population: 10313620 " + "NC (North Carolina) - Population: 10156689 " + "MI (Michigan) - Population: 9933445 " + "NJ (New Jersey) - Population: 8978416 " + "VI (Virginia) - Population: 8414380 " + "WA (Washington) - Population: 7280934 " + "AZ (Arizona) - Population: 6908642 " + "MA (Massachusetts) - Population: 6823721 " + "TN (Tennessee) - Population: 6649404 " + "IN (Indiana) - Population: 6634007 " + "MO (Missouri) - Population: 6091176 " + "MD (Maryland) - Population: 6024752 " + "WI (Wisconsin) - Population: 5772917 " + "CO (Colorado) - Population: 5530105 " + "MN (Minnesota) - Population: 5525050 " + "SC (South Carolina) - Population: 4959822 " + "AL (Alabama) - Population: 4860545 " + "LA (Louisiana) - Population: 4686157 " + "KY (Kentucky) - Population: 4436113 " + "OR (Oregon) - Population: 4085989 " + "OK (Oklahoma) - Population: 3921207 " + "CT (Connecticut) - Population: 3587685 " + "PR (Puerto Rico) - Population: 3406520 " + "IA (Iowa) - Population: 3130869 " + "UT (Utah) - Population: 3044321 " + "AR (Arkansas) - Population: 2988231 " + "MS (Mississippi) - Population: 2985415 " + "NV (Nevada) - Population: 2939254 " + "KS (Kansas) - Population: 2907731 " + "NM (New Mexico) - Population: 2085432 " + "NE (Nebraska) - Population: 1907603 " + "WV (West Virginia) - Population: 1828637 " + "ID (Idaho) - Population: 1680026 " + "HI (Hawaii) - Population: 1428683 " + "NH (New Hampshire) - Population: 1335015 " + "ME (Maine) - Population: 1330232 " + "RI (Rhode Island) - Population: 1057566 " + "MT (Montana) - Population: 1038656 " + "DE (Delaware) - Population: 952698 " + "SD (South Dakota) - Population: 861542 " + "ND (North Dakota) - Population: 755548 " + "AK (Alaska) - Population: 741522 " + "DC (District of Columbia) - Population: 684336 " + "VT (Vermont) - Population: 623354 " + "WY (Wyoming) - Population: 584910 ", usStates.toString());
australiaStates.arrageByPopulation(); assertEquals("NSW (New South Wales) - Population: 7704300 " + "VIC (Victoria) - Population: 6039100 " + "QL (Queensland) - Population: 4827000 " + "WA (Western Australia) - Population: 2613700 " + "SA (South Australia) - Population: 1706500 " + "TAS (Tasmania) - Population: 518500 " + "ACT (Australian Capital Territory) - Population: 397397 " + "NT (Northern Territory) - Population: 244000 ", australiaStates.toString());
marks+=mark; feedback=feedback+mark+" marks: arrangeByPopulation passed "; }
//log reporting @AfterClass public static void wrapUp() throws IOException { System.out.println(feedback.substring(0,feedback.length()-1)); System.out.println("--------------------------------------------"); System.out.println("Total: "+marks+" out of 80"); String timeStamp = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss").format(new Date()); File file = new File("report"+timeStamp+".txt"); FileWriter writer = new FileWriter(file); writer.write(feedback.substring(0,feedback.length()-1)+" "); writer.write("-------------------------------------------- "); writer.write(marks+" "); writer.flush(); writer.close(); } } @Test @Graded(marks = mark, description = "arrangeByPopulation") public void testArrangeByPopulation() { usStates.arrageByPopulation(); assertEquals("CA (California) - Population: 39296476 " + "TX (Texas) - Population: 27904862 " + "FL (Florida) - Population: 20656589 " + "NY (New York) - Population: 19836286 " + "IL (Illinois) - Population: 12835726 " + "PA (Pennsylvania) - Population: 12787085 " + "OH (Ohio) - Population: 11622554 " + "GA (Georgia) - Population: 10313620 " + "NC (North Carolina) - Population: 10156689 " + "MI (Michigan) - Population: 9933445 " + "NJ (New Jersey) - Population: 8978416 " + "VI (Virginia) - Population: 8414380 " + "WA (Washington) - Population: 7280934 " + "AZ (Arizona) - Population: 6908642 " + "MA (Massachusetts) - Population: 6823721 " + "TN (Tennessee) - Population: 6649404 " + "IN (Indiana) - Population: 6634007 " + "MO (Missouri) - Population: 6091176 " + "MD (Maryland) - Population: 6024752 " + "WI (Wisconsin) - Population: 5772917 " + "CO (Colorado) - Population: 5530105 " + "MN (Minnesota) - Population: 5525050 " + "SC (South Carolina) - Population: 4959822 " + "AL (Alabama) - Population: 4860545 " + "LA (Louisiana) - Population: 4686157 " + "KY (Kentucky) - Population: 4436113 " + "OR (Oregon) - Population: 4085989 " + "OK (Oklahoma) - Population: 3921207 " + "CT (Connecticut) - Population: 3587685 " + "PR (Puerto Rico) - Population: 3406520 " + "IA (Iowa) - Population: 3130869 " + "UT (Utah) - Population: 3044321 " + "AR (Arkansas) - Population: 2988231 " + "MS (Mississippi) - Population: 2985415 " + "NV (Nevada) - Population: 2939254 " + "KS (Kansas) - Population: 2907731 " + "NM (New Mexico) - Population: 2085432 " + "NE (Nebraska) - Population: 1907603 " + "WV (West Virginia) - Population: 1828637 " + "ID (Idaho) - Population: 1680026 " + "HI (Hawaii) - Population: 1428683 " + "NH (New Hampshire) - Population: 1335015 " + "ME (Maine) - Population: 1330232 " + "RI (Rhode Island) - Population: 1057566 " + "MT (Montana) - Population: 1038656 " + "DE (Delaware) - Population: 952698 " + "SD (South Dakota) - Population: 861542 " + "ND (North Dakota) - Population: 755548 " + "AK (Alaska) - Population: 741522 " + "DC (District of Columbia) - Population: 684336 " + "VT (Vermont) - Population: 623354 " + "WY (Wyoming) - Population: 584910 ", usStates.toString());
australiaStates.arrageByPopulation(); assertEquals("NSW (New South Wales) - Population: 7704300 " + "VIC (Victoria) - Population: 6039100 " + "QL (Queensland) - Population: 4827000 " + "WA (Western Australia) - Population: 2613700 " + "SA (South Australia) - Population: 1706500 " + "TAS (Tasmania) - Population: 518500 " + "ACT (Australian Capital Territory) - Population: 397397 " + "NT (Northern Territory) - Population: 244000 ", australiaStates.toString());
marks+=mark; feedback=feedback+mark+" marks: arrangeByPopulation passed "; }
//log reporting @AfterClass public static void wrapUp() throws IOException { System.out.println(feedback.substring(0,feedback.length()-1)); System.out.println("--------------------------------------------"); System.out.println("Total: "+marks+" out of 80"); String timeStamp = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss").format(new Date()); File file = new File("report"+timeStamp+".txt"); FileWriter writer = new FileWriter(file); writer.write(feedback.substring(0,feedback.length()-1)+" "); writer.write("-------------------------------------------- "); writer.write(marks+" "); writer.flush(); writer.close(); } } "WV (West Virginia) - Population: 1828637 " + "ID (Idaho) - Population: 1680026 " + "HI (Hawaii) - Population: 1428683 " + "NH (New Hampshire) - Population: 1335015 " + "ME (Maine) - Population: 1330232 " + "RI (Rhode Island) - Population: 1057566 " + "MT (Montana) - Population: 1038656 " + "DE (Delaware) - Population: 952698 " + "SD (South Dakota) - Population: 861542 " + "ND (North Dakota) - Population: 755548 " + "AK (Alaska) - Population: 741522 " + "DC (District of Columbia) - Population: 684336 " + "VT (Vermont) - Population: 623354 " + "WY (Wyoming) - Population: 584910 ", usStates.toString());
australiaStates.arrageByPopulation(); assertEquals("NSW (New South Wales) - Population: 7704300 " + "VIC (Victoria) - Population: 6039100 " + "QL (Queensland) - Population: 4827000 " + "WA (Western Australia) - Population: 2613700 " + "SA (South Australia) - Population: 1706500 " + "TAS (Tasmania) - Population: 518500 " + "ACT (Australian Capital Territory) - Population: 397397 " + "NT (Northern Territory) - Population: 244000 ", australiaStates.toString());
marks+=mark; feedback=feedback+mark+" marks: arrangeByPopulation passed "; }
//log reporting @AfterClass public static void wrapUp() throws IOException { System.out.println(feedback.substring(0,feedback.length()-1)); System.out.println("--------------------------------------------"); System.out.println("Total: "+marks+" out of 80"); String timeStamp = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss").format(new Date()); File file = new File("report"+timeStamp+".txt"); FileWriter writer = new FileWriter(file); writer.write(feedback.substring(0,feedback.length()-1)+" "); writer.write("-------------------------------------------- "); writer.write(marks+" "); writer.flush(); writer.close(); } } australiaStates.arrageByPopulation(); assertEquals("NSW (New South Wales) - Population: 7704300 " + "VIC (Victoria) - Population: 6039100 " + "QL (Queensland) - Population: 4827000 " + "WA (Western Australia) - Population: 2613700 " + "SA (South Australia) - Population: 1706500 " + "TAS (Tasmania) - Population: 518500 " + "ACT (Australian Capital Territory) - Population: 397397 " + "NT (Northern Territory) - Population: 244000 ", australiaStates.toString());
marks+=mark; feedback=feedback+mark+" marks: arrangeByPopulation passed "; }
//log reporting @AfterClass public static void wrapUp() throws IOException { System.out.println(feedback.substring(0,feedback.length()-1)); System.out.println("--------------------------------------------"); System.out.println("Total: "+marks+" out of 80"); String timeStamp = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss").format(new Date()); File file = new File("report"+timeStamp+".txt"); FileWriter writer = new FileWriter(file); writer.write(feedback.substring(0,feedback.length()-1)+" "); writer.write("-------------------------------------------- "); writer.write(marks+" "); writer.flush(); writer.close(); } }
Client.java
package stateInformation;
import java.io.IOException; import java.text.DecimalFormat;
public class Client { public static void main(String[] args) throws IOException { // TODO Auto-generated method stub /* * 1. create object states of class AllStates populated with file data/AustraliaStateData.txt * 2. Display the toString() output of the object in the format specified in the pdf specifications * 3. Display the state whose abbreviation is NSW in the format specified in the pdf specifications * 4. Display if Victoria exists or not in the format specified in the pdf specifications * 5. Display the least population state in the format specified in the pdf specifications * 6. Display the average population up to 2 decimal places of precision using DecimalFormat * (more details in pdf specifications) * 7. Display the number of "large" states in the format specified in the pdf specifications * 8. Display the number of "small" states in the format specified in the pdf specifications * 9. Display the number of states that begin with an 'A' in the format specified in the pdf specifications */ }
} package stateInformation;
import java.io.IOException; import java.text.DecimalFormat;
public class Client { public static void main(String[] args) throws IOException { // TODO Auto-generated method stub /* * 1. create object states of class AllStates populated with file data/AustraliaStateData.txt * 2. Display the toString() output of the object in the format specified in the pdf specifications * 3. Display the state whose abbreviation is NSW in the format specified in the pdf specifications * 4. Display if Victoria exists or not in the format specified in the pdf specifications * 5. Display the least population state in the format specified in the pdf specifications * 6. Display the average population up to 2 decimal places of precision using DecimalFormat * (more details in pdf specifications) * 7. Display the number of "large" states in the format specified in the pdf specifications * 8. Display the number of "small" states in the format specified in the pdf specifications * 9. Display the number of states that begin with an 'A' in the format specified in the pdf specifications */ }
} Graded.java

package stateInformation;
//DO NOT MODIFY THIS CLASS
public @interface Graded {
int marks();
String description();
} package stateInformation;
//DO NOT MODIFY THIS CLASS
public @interface Graded {
int marks();
String description();
}
State.java

package stateInformation;
//DO NOT MODIFY THIS CLASS

/** * * State is defined by its name, abbreviation and population * */ public class State { private String abbrev, name; private int population; public String getAbbrev() { return abbrev; } public void setAbbrev(String abbrev) { this.abbrev = abbrev; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getPopulation() { return population; } public void setPopulation(int population) { this.population = Math.max(0, population); } /** * constructor * @param abbrev * @param name * @param population */ public State(String abbrev, String name, int population) { setAbbrev(abbrev); setName(name); setPopulation(population); } /** * * @return true if state is "large", defined as population of more than 10 million, return false otherwise */ public boolean isLargeState() { return population > 10000000; } /** * * @return true if state is "small", defined as population of less than 1 million, return false otherwise */ public boolean isSmallState() { return population < 1000000; } /** * String representation of a State objects */ public String toString() { return abbrev+" ("+name+") - Population: "+population; } } package stateInformation;
//DO NOT MODIFY THIS CLASS

/** * * State is defined by its name, abbreviation and population * */ public class State { private String abbrev, name; private int population; public String getAbbrev() { return abbrev; } public void setAbbrev(String abbrev) { this.abbrev = abbrev; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getPopulation() { return population; } public void setPopulation(int population) { this.population = Math.max(0, population); } /** * constructor * @param abbrev * @param name * @param population */ public State(String abbrev, String name, int population) { setAbbrev(abbrev); setName(name); setPopulation(population); } /** * * @return true if state is "large", defined as population of more than 10 million, return false otherwise */ public boolean isLargeState() { return population > 10000000; } /** * * @return true if state is "small", defined as population of less than 1 million, return false otherwise */ public boolean isSmallState() { return population < 1000000; } /** * String representation of a State objects */ public String toString() { return abbrev+" ("+name+") - Population: "+population; } }
There are the following data you need:
AustraliaStateData.txt

NSW,New South Wales,7704300 VIC,Victoria,6039100 SA,South Australia,1706500 QL,Queensland,4827000 TAS,Tasmania,518500 WA,Western Australia,2613700 ACT,Australian Capital Territory,397397 NT,Northern Territory,244000 NSW,New South Wales,7704300 VIC,Victoria,6039100 SA,South Australia,1706500 QL,Queensland,4827000 TAS,Tasmania,518500 WA,Western Australia,2613700 ACT,Australian Capital Territory,397397 NT,Northern Territory,244000
UsaStateData.txt

AL,Alabama,4860545 AK,Alaska,741522 AZ,Arizona,6908642 AR,Arkansas,2988231 CA,California,39296476 CO,Colorado,5530105 CT,Connecticut,3587685 DE,Delaware,952698 DC,District of Columbia,684336 FL,Florida,20656589 GA,Georgia,10313620 HI,Hawaii,1428683 ID,Idaho,1680026 IL,Illinois,12835726 IN,Indiana,6634007 IA,Iowa,3130869 KS,Kansas,2907731 KY,Kentucky,4436113 LA,Louisiana,4686157 ME,Maine,1330232 MD,Maryland,6024752 MA,Massachusetts,6823721 MI,Michigan,9933445 MN,Minnesota,5525050 MS,Mississippi,2985415 MO,Missouri,6091176 MT,Montana,1038656 NE,Nebraska,1907603 NV,Nevada,2939254 NH,New Hampshire,1335015 NJ,New Jersey,8978416 NM,New Mexico,2085432 NY,New York,19836286 NC,North Carolina,10156689 ND,North Dakota,755548 OH,Ohio,11622554 OK,Oklahoma,3921207 OR,Oregon,4085989 PA,Pennsylvania,12787085 RI,Rhode Island,1057566 SC,South Carolina,4959822 SD,South Dakota,861542 TN,Tennessee,6649404 TX,Texas,27904862 UT,Utah,3044321 VT,Vermont,623354 VI,Virginia,8414380 WA,Washington,7280934 WV,West Virginia,1828637 WI,Wisconsin,5772917 WY,Wyoming,584910 PR,Puerto Rico,3406520 AL,Alabama,4860545 AK,Alaska,741522 AZ,Arizona,6908642 AR,Arkansas,2988231 CA,California,39296476 CO,Colorado,5530105 CT,Connecticut,3587685 DE,Delaware,952698 DC,District of Columbia,684336 FL,Florida,20656589 GA,Georgia,10313620 HI,Hawaii,1428683 ID,Idaho,1680026 IL,Illinois,12835726 IN,Indiana,6634007 IA,Iowa,3130869 KS,Kansas,2907731 KY,Kentucky,4436113 LA,Louisiana,4686157 ME,Maine,1330232 MD,Maryland,6024752 MA,Massachusetts,6823721 MI,Michigan,9933445 MN,Minnesota,5525050 MS,Mississippi,2985415 MO,Missouri,6091176 MT,Montana,1038656 NE,Nebraska,1907603 NV,Nevada,2939254 NH,New Hampshire,1335015 NJ,New Jersey,8978416 NM,New Mexico,2085432 NY,New York,19836286 NC,North Carolina,10156689 ND,North Dakota,755548 OH,Ohio,11622554 OK,Oklahoma,3921207 OR,Oregon,4085989 PA,Pennsylvania,12787085 RI,Rhode Island,1057566 SC,South Carolina,4959822 SD,South Dakota,861542 TN,Tennessee,6649404 TX,Texas,27904862 UT,Utah,3044321 VT,Vermont,623354 VI,Virginia,8414380 WA,Washington,7280934 WV,West Virginia,1828637 WI,Wisconsin,5772917 WY,Wyoming,584910 PR,Puerto Rico,3406520

Explanation / Answer

All the methods of AllStates.java required in order are defined below:

/**
* 1)
* Function description: get the average population of all states
*
* @return: the average population
*/
public double averagePopulation() {
double totalPopulation = 0.0;
for(int i = 0; i < this.states.length; i++){
totalPopulation += this.states[i].getPopulation();
}
DecimalFormat df = new DecimalFormat("#.00");

//Calculating average population and returning it
String averagePopulation = df.format(totalPopulation/this.states.length);
return Double.parseDouble(averagePopulation);
}

/**
*
* 2)
* Function description: find whether the given state is in the dataset
* , name
* @return: If the state exists in the dataset, return true, else return false
*/
public boolean exists(String name) {
for(int i = 0; i < this.states.length; i++){
if(this.states[i].getName().equals(name))
return true;
}
return false;
}

/**
* 3)
* Function description: find the states that the population is higher than 10000000 (10 million)
*
* @return: the number of state with the population more than 10000000 (10 million)
*/
public int getLargeStateCount() {
int numberOfStates = 0;
for(int i = 0; i < this.states.length; i++){
if(this.states[i].getPopulation() > 10000000)
numberOfStates++;
}
return numberOfStates;
}

/**
* 4)
* Function description: find the states that the population is less than 1000000 (1 million)
*
* @return: the number of state with the population less than 1000000 (1 million)
*/
public int getSmallStateCount() {
int numberOfStates = 0;
for(int i = 0; i < this.states.length; i++){
if(this.states[i].getPopulation() < 10000000){
numberOfStates++;
}
}
return numberOfStates;
}

/**
* 5)
* Function description: Find the state name by abbreviation in the dataset
* , abbreviation
* @return: the state name if we can find the state name by the input abbreviation,
* else return "No state with given abbreviation exists"
*/
public String getNameByAbbreviation(String abbreviation) {
for(int i = 0; i < this.states.length; i++){
if(this.states[i].getAbbrev().equals(abbreviation))
return this.states[i].getName();
}
return "No state with given abbreviation exists";
}

/**
* 6)
* Function description: determine the number of states that the names start with initial passed
* @param: initial: first letter of required states
* @return: return the number of state where the state names start with initial passed
*/
public int countStatesCountByInitial(char initial) {
int numberOfStates = 0;
for(int i = 0; i < this.states.length; i++){
if(this.states[i].getName.charAt(0) == initial){
numberOfStates++;
}
}
return numberOfStates;
}

/**
* 7)
* Function description: get the state that has the lowest population
*
* @return: the state name with the minimum population
*/
public String leastPopulatedState() {
//Consider the first city to be least populated initially
int population = this.states[0].getPopulation();
String name = this.states[0].getName();
//Check if any other city with less population exist
for(int i = 1; i < this.states.length; i++){
if(this.states[i].getPopulation() < population){
population = this.states[i].getPopulation();
name = this.states[i].getName();
}
}
return name;
}

/**
* 8)
* Function description: print a list of all states
* @return: String representing the states
* The example of the format:
* "NSW (New South Wales) - Population: 7704300
* VIC (Victoria) - Population: 6039100
* SA (South Australia) - Population: 1706500"
*/
public String toString() {
String allStateInformation = "";
for(int i = 0; i < this.states.length; i++){
allStateInformation += this.states[i].toString()+" ";
}
return allStateInformation;
}

/**
* 9)
* Function description: find the states that the names start with initial passed
* @param: initial: first letter of required states
* @return: return the states where the state names start with initial passed
*/
public State[] getStatesCountByInitial(char initial) {
//you'll need to determine the size of the resulting array, populate it, and return it
//Function defined previously already does this job of finding total states with initials
int numberOfStates = countStatesCountByInitial(initial);
State[] statesWithInitial = new State[numberOfStates];
//Counter for populating statesWithInitial array
int j=0;
for(int i = 0; i < this.states.length; i++){
if(this.states[i].getName.charAt(0) == initial){
statesWithInitial[j] = this.states[i];
j++;
}
}
return statesWithInitial;
}

/**
* 10)
* re-arrange the states in decreasing order of population
*/
public void arrageByPopulation() {
/**
* Bubble sort implementation to sort the states array based on the population.
* With every pass(i.e iteration of outer loop) the state with highest population goes to the end of states array
*/
int n = this.states.length;
for (int i = 0; i < n-1; i++){
for (int j = 0; j < n-i-1; j++){
if (this.states[j].getPopulation() > this.states[j+1].getPopulation()){
//Creating a new temp State from the state at index j
State tempState = new State(this.states[j].getAbbrev(), this.states[j].getName(), this.states[j].getPopulation());
this.states[j] = this.states[j+1];
this.states[j+1] = tempState;
}
}
}
}

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