Two-Repeated-Elements.java

//User function template for JAVA

class Solution
{
    //Function to find two repeated elements.
    public int[] twoRepeated(int arr[], int n)
    {
        // Your code here
        int ans[] = new int[2];
        int k=0;
        int flag = 0;

        //s2 traverse in arr
        for(int i=0; i<n+2;i++){
            if(arr[Math.abs(arr[i])] >0){
                arr[Math.abs(arr[i])] = - arr[Math.abs(arr[i])];
                
            }
            else{
                if(flag==0){
                    ans[k++] = Math.abs(arr[i]);
                    flag=1;
                }
                else{
                    ans[k++]  =  Math.abs(arr[i]);
                }
            }
        }
         return ans;
    }
    
}