///Java: Write a program to get create, sort, print, and searches an array conta

Question

///Java: Write a program to get create, sort, print, and searches an array containing random numbers of random numbers.

? Declare an array of size 10. (an unsorted array)
? Fill each element in this array with random numbers from 1 to 20.
? Make a copy of this array. (to be sorted)
? Using the java API, sort the copy.
? Print a table showing both the unsorted and sorted arrays as shown in the sample below.
? Enter a number to search for.
? Utilizing a “for each loop”:
? Search for the search string in both the unsorted and sorted arrays.
o Output the search value and location found as shown in the example or output the search value was not found.

//output sample.

///////////////////////////////////////////////////////////////////////////

Code I have come up with but does not seem to work.

import java.util.Scanner;
import java.util.Random;
import java.util.Arrays;

public class ArrayWork
{
   public static void main(String[] args)
   {
       Scanner scan = new Scanner(System.in);
       Random rand = new Random();
       int array1 = new int[10]; // array size of 10
       int array2 = new int[array1.length]; // copy of array1
       int search = scan.nextInt; // user input number to search for
       int ele1 = 0; // element in array1
       int ele2 = 0; // element in array2
       int temp = 0; // temporary holder
       for (int i = 0; i<array1.length; i++) // fill array 1 with random numbers from 1 to 20
       {
           array1[i] = rand.nextInt(20)+1; // random number of 1-20
       } // end loop
      
       int[] array2 = Arrays.copyOf(array1, array1.length); // copy of array1 into array2
      
       for (int i=0; i < array2.length; i++) // sorting array2
       {
           for (int j = i + 1; j < array2.length; j++)
           {
               if (array2[i] > array2[j])
               {
                   temp = array2[i];
                   array2[i] = array2[j];
                   array2[j] = temp;
               }
           }
       } // close
      
       System.out.printf("%-20s%-20s ", "Unsorted Array", "Sorted Array"); // printing heading for both arrays
       for (int i = 0; i < 10; i++)
       {
           System.out.println("%-20d%-20d " array1[i], array2[i]);
       } // close
      
       System.out.print("Please enter number to search for:");
       search = scan.nextInt;
       for (int i : array1) // for-each loop
       {
           ele1++;
           if (i == search) // if the searched number does appear in the unsorted array
           { // prints the location of where it was found
               System.out.println("Search value:" +i+ "found at location" +ele1+ "in the unsorted array.");
           } // close
           else
           {
               System.out.print("Search value:" +i+ "was not found");
           }
       } // close
       for (int i : array2) // for-each loop
       {
           ele2++;
           if (i == search) // if the number is found in the sorted array
           {
               System.out.println("Search value:" +i+ "found at location" +ele2+ "in the sorted array.");
           } // close
       } // close
   } // end main
} // end class

Unsorted Array Sorted Array 10 12 14 14 14 14 15 10 Please enter number to search for: 6 Search Ualue 6 found at location 1 in the unsorted array Search Ualue 6 found at location 4 in the sorted array

Explanation / Answer

import java.util.Scanner;
import java.util.Random;
import java.util.Arrays;
public class ArrayWork
{
public static void main(String[] args)
{
Scanner scan = new Scanner(System.in);
Random rand = new Random();
int[] array1 = new int[10]; // array size of 10
int[] array2 = new int[array1.length]; // copy of array1
int search; // user input number to search for
int ele1 = 0; // element in array1
int ele2 = 0; // element in array2
int temp = 0; // temporary holder
for (int i = 0; i<array1.length; i++) // fill array 1 with random numbers from 1 to 20
{
array1[i] = rand.nextInt(20)+1; // random number of 1-20
} // end loop
  
array2 = Arrays.copyOf(array1, array1.length); // copy of array1 into array2
  
for (int i=0; i < array2.length; i++) // sorting array2
{
for (int j = i + 1; j < array2.length; j++)
{
if (array2[i] > array2[j])
{
temp = array2[i];
array2[i] = array2[j];
array2[j] = temp;
}
}
} // close
  
System.out.printf("%-20s%-20s ", "Unsorted Array", "Sorted Array"); // printing heading for both arrays
for (int i = 0; i < 10; i++)
{
System.out.printf("%-20d%-20d ", array1[i], array2[i]);
} // close
  
System.out.print("Please enter number to search for:");
search = scan.nextInt();
       int j = 0;
for (int i : array1) // for-each loop
{
ele1++;
if (i == search) // if the searched number does appear in the unsorted array
{ // prints the location of where it was found
System.out.println("Search value: " +i+ " found at location " +ele1+ " in the unsorted array.");
               j++;
} // close
  
} // close

       if(j == 0)
{
System.out.print("Search value: " +search+ " was not found");
}

for (int i : array2) // for-each loop
{
ele2++;
if (i == search) // if the number is found in the sorted array
{
System.out.println("Search value: " +i+ " found at location " +ele2+ " in the sorted array.");
} // close
} // close
} // end main
} // end class

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