below is the skeleton file for these question. JAVA you can use any sample input
ID: 3755676 • Letter: B
Question
below is the skeleton file for these question. JAVA
you can use any sample input
package comp2402a1;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
public class Part3 {
/**
* Your code goes here - see Part0 for an example
* @param r the reader to read from
* @param w the writer to write to
* @throws IOException
*/
public static void doIt(BufferedReader r, PrintWriter w) throws IOException {
// Your code goes here - see Part0 for an example
}
/**
* The driver. Open a BufferedReader and a PrintWriter, either from System.in
* and System.out or from filenames specified on the command line, then call doIt.
* @param args
*/
public static void main(String[] args) {
try {
BufferedReader r;
PrintWriter w;
if (args.length == 0) {
r = new BufferedReader(new InputStreamReader(System.in));
w = new PrintWriter(System.out);
} else if (args.length == 1) {
r = new BufferedReader(new FileReader(args[0]));
w = new PrintWriter(System.out);
} else {
r = new BufferedReader(new FileReader(args[0]));
w = new PrintWriter(new FileWriter(args[1]));
}
long start = System.nanoTime();
doIt(r, w);
w.flush();
long stop = System.nanoTime();
System.out.println("Execution time: " + 10e-9 * (stop-start));
} catch (IOException e) {
System.err.println(e);
System.exit(-1);
}
}
}
Explanation / Answer
package comp2402a1;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Collections;
public class Part3 {
/**
*
* Your code goes here - see Part0 for an example
*
* @param r
* the reader to read from
*
* @param w
* the writer to write to
*
* @throws IOException
*
*/
public static void doIt(BufferedReader r, PrintWriter w) throws IOException {
ArrayList<String>al = new ArrayList<String>();
String line=r.readLine();
// reading the lines into arraylist
while(line!=null){
al.add(line);
line = r.readLine();
}
// sorting the lines in the arraylist
Collections.sort(al);
// writing the arrayList
for(String str:al){
w.println(str);
}
}
/**
*
* The driver. Open a BufferedReader and a PrintWriter, either from
* System.in
*
* and System.out or from filenames specified on the command line, then call
* doIt.
*
* @param args
*
*/
public static void main(String[] args) {
try {
BufferedReader r;
PrintWriter w;
if (args.length == 0) {
r = new BufferedReader(new InputStreamReader(System.in));
w = new PrintWriter(System.out);
} else if (args.length == 1) {
r = new BufferedReader(new FileReader(args[0]));
w = new PrintWriter(System.out);
} else {
r = new BufferedReader(new FileReader(args[0]));
w = new PrintWriter(new FileWriter(args[1]));
}
long start = System.nanoTime();
doIt(r, w);
w.flush();
long stop = System.nanoTime();
System.out.println("Execution time: " + 10e-9 * (stop - start));
} catch (IOException e) {
System.err.println(e);
System.exit(-1);
}
}
}
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.