LeetCode 1 (74min)

两数之和

目的从数组中找到两个下标

用二重循环遍历

设置终止条件

done

var twoSum = function (nums, target) {
    let len = nums.length
    for (let i = 0; i < len; i++) {
        for (let j = i + 1; j < len; j++) {
            if (nums[i] + nums[j] === target) {
                return [i, j]
            }
        }
    }
};