盛最多水的容器

const maxArea = (height) => {
    let l = 0,
        r = height.length - 1;
    let ans = 0;
    while (l < r) {
        let area = Math.min(height[l], height[r]) * (r - l);
        ans = Math.max(ans, area);
        if (height[l] <= height[r]) {
            ++l;
        } else {
            --r;
        }
    }
    return ans;
}