[LeetCode] Contains Duplicate 包含重復值
Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice ...
原文：[LeetCode] 219. Contains Duplicate II 包含重復值之二
Given an array of integers and an integerk, find out whether there are two distinct indicesiandjin the array such thatnums i nums j and theabsolutedifference betweeniandjis at mostk. Example : Exampl ...
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