原文链接: https://leetcode-cn.com/problems/maximum-length-of-pair-chain
英文原文You are given an array of n pairs pairs where
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原文链接: https://leetcode-cn.com/problems/split-array-into-consecutive-subsequences
英文原文You are given an integer array nu
原文链接: https://leetcode-cn.com/problems/maximum-swap
英文原文You are given an integer num. You can swap two digits at most
原文链接: https://leetcode-cn.com/problems/valid-parenthesis-string
英文原文Given a string s containing only three types of ch
原文链接: https://leetcode-cn.com/problems/valid-palindrome-ii
英文原文Given a string s, return true if the s can be palindrom
原文链接: https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock-with-transaction-fee
英文原文You are given an array
原文链接: https://leetcode-cn.com/problems/monotone-increasing-digits
英文原文An integer has monotone increasing digits if and
原文链接: https://leetcode-cn.com/problems/set-intersection-size-at-least-two
英文原文An integer interval [a, b] (for integers
原文链接: https://leetcode-cn.com/problems/partition-labels
英文原文You are given a string s. We want to partition the string
原文链接: https://leetcode-cn.com/problems/couples-holding-hands
英文原文There are n couples sitting in 2n seats arranged in a