leetcode算法题笔记|two sum

/**
 * @param {number[]} nums
 * @param {number} target
 * @return {number[]}
 */
var twoSum = function(nums, target) {
    var len = nums.length;
    for(let i = 0;i<len;i++){
        for(let j = 0;j<len;j++){
            if(i!=j){
                var sum = nums[i]+nums[j];
                if(sum === target){
                    return [i,j];
                }
            }
        }
    }
};
var nums = [1,2,3,4,5];
twoSum(nums,9);