Find Indexed of sub array sum

 public class progprac {

    public static void main(String[] args) {
//       int[] arr={1,2,3,7,5};
       int[] arr={1,1,1,1};
       //target=12
        int k=2;
        for(int i=0;i<=arr.length-1;i++){
            int sum=0;
            for (int j=i;j<=arr.length-1;j++){
                sum=sum+arr[j];
                if(sum==k){
                    System.out.println("indexes are "+i+" "+j);
                    break;
                }
                if(sum>k){
                    break;
                }
            }
        }
    }
}

This will works only for Positive Numbers in Array




Below Program works for any array either positve,negative numbers
public class progprac {
    public static void main(String[] args) {
       int[] arr={1,2,-1,3,7,5,6,1};
        int k=12;
        for(int i=0;i<=arr.length-1;i++){
            int sum=0;
            for (int j=i;j<=arr.length-1;j++){
                sum=sum+arr[j];
                if(sum==k){
                    System.out.println("indexes are from "+i+" "+j);
                }
            }
        }
    }
}