@author jackzhenguo @desc @date 2019/11/30 127 找出所有重复元素 from collections import Counter def find_all_duplicates(lst): c = Counter(lst) return list(filter(lambda k: c[k] > 1, c)) find_all_duplicates([1, 2, 2, 3, 3, 3]) # [2,3] [上一个例子](126.md) [下一个例子](128.md)