20211108-01 Two Sum

https://leetcode-cn.com/problems/two-sum/

python

# 题目给了边界限制，所以代码中没做判断
class Solution(object):
    def twoSum(self, nums, target):
        dic = {}
        for idx, num in enumerate(nums):
            if target - num in dic:
                return [idx, dic[target - num]]
            dic[num] = idx