Question

print positions of all duplicate elements in an array to be searched.

example:
arr1={1,2,1,3,1,4,5}
elements to be searched:1
output :1
found at positions:
0
2
4

Share code with your friends

Code

import java.util.Scanner;
public class positionsOfDuplicateElementsToBeSearched
{
    public static void main(String[] args)
    {
        /* Initialize array */
        int [] arr1;

        int n=0,i=0,item=0;
        Scanner sc = new Scanner(System.in);

        System.out.println("Enter a no. of elements in the array");
        n = sc.nextInt();
        System.out.println("Enter numbers in array");
        arr1=new int[n];
        for(i=0;i< n;i++)
        {
            arr1[i]=sc.nextInt();
        }
        System.out.println("Enter element to be searched in an array");
        item=sc.nextInt();

        System.out.println();

        System.out.println(item+" found at position/positions:" );
        for ( i = 0; i < n; i++)
        {
            if(arr1[i]==item)
            {
                System.out.println(i);

            }
        }

    }
}