编辑代码

const datas = [2, 3, 5, 5, 10, 11, 15, 7, 8, 9, 3, 3, 2, 1, 4, 2, 1, 2, 3];
function minSubArray(array, sum) {
    let l = 0, total = 0;
    let ans = 0
    for (r in array) {
        total += array[r];
        while (total >= sum) {
            if (total == sum) ans = Math.max(r - l + 1, ans);
            total -= array[l];
            l += 1;
        }
    }
    return ans;
}
console.log(minSubArray(datas, 15))