题目难度
题目描述
提示
解题思路
方法2代码
def twoSum(self, nums: List[int], target: int) -> List[int]:
mapp=dict()
for i in range(len(nums)):
x=nums[i]
if target-x in mapp:
return [mapp[target-x],i]
mapp[x]=i #检查完再加入字典防止出现target=num1+num1
