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

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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); 
                
            }
        } 
        
    }  
}