Solution for MinAbsSum (Dynamic Programming)

gistfile1.txt

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');
// Not so optimal...
// Lesson: https://codility.com/programmers/lessons/17-dynamic_programming/min_abs_sum/

function solution(A) {
    
    if (!A.length) {
        return 0;
    }
    
    if (A.length === 1) {
        return A[0];
    }

    var st = new Set()

    for (a of A) {
        if (st.size === 0) {
            st.add(a);
        }
        else {
            let stnew = new Set()
            for (let s of st) {
                stnew.add(Math.abs(s - a));
                stnew.add(Math.abs(s + a));
            }
            st = stnew;
        }
        //console.log("set: ",st);
    }
    
    let absst = Array.from(st).map(se => Math.abs(se));
    
    return Math.min.apply(null, absst);
    
}

not working