codility equals

JavaScript

function sum(A,x,y)
{
	var sum1 =0;
  for (i = x; i <= y; i += 1) {
  sum1 = sum1 + A[i];
  }
	return sum1;
}

function solution(A) {
    var length = A.length;
    for (x = 1; x <= length-4; x += 1) {
        for(y=3;y<=length-2;y+=1){
        if(sum(A,0,x-1) === sum(A,x+1,y-1) === sum(A,y+1,length-1)){
        return "success";
        }
        }
}
}

console.log(solution([4, 5,1,1,1,1,4,3,1])); // -2