标签:The return 简单 color als 实现 set example input
题目描述:
Given an array of integers, find if the array contains any duplicates.
Your function should return true if any value appears at least twice in the array, and it should return false if every element is distinct.
Example 1:
Input: [1,2,3,1] Output: true
Example 2:
Input: [1,2,3,4] Output: false
Example 3:
Input: [1,1,1,3,3,4,3,2,4,2] Output: true
代码实现:
1 class Solution: 2 def containsDuplicate(self, nums) -> bool: 3 return len(nums) != len(set(nums))
分析:
利用python的set()函数,可以非常简单地判断有无重复元素:set()函数会自动把重复的元素去掉(集合中不能包含重复的元素!)。
标签:The return 简单 color als 实现 set example input
原文地址:https://www.cnblogs.com/tbgatgb/p/10947144.html