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2022-07-23 18:26:00 【我不是萧海哇~~~~】
给你一个整数数组 nums 。如果任一值在数组中出现 至少两次 ，返回 true ；如果数组中每个元素互不相同，返回 false 。
示例 1：
输入：nums = [1,2,3,1]
输出：true
示例 2：
输入：nums = [1,2边栏推荐
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