谁说一定要全部建立好hashMap以后才能开始查找呢?大家可以观察一下,以下的代码~ 上代码 (python3) class Solution: def twoSum(self, numbers, target): # write code here if len(numbers) > 1: return self.getHash_traverseOnce(numbers, target) else: return [] def getHash_traverseOnce(se...