u010969626的博客

class Solution: def evalRPN(self, tokens: List[str]) -> int: s = [] res = 0 if len(tokens)==1: return int(tokens[0]) for i in range(len(tokens)): if tokens[i] == "+": .

class Solution: def twoSum(self, nums: List[int], target: int) -> List[int]: for i in range(len(nums)): for j in range(i+1,len(nums)): if nums[i]+nums[j]==target: return [i,j] .