原文链接: https://leetcode-cn.com/problems/letter-case-permutation
英文原文Given a string s, we can transform every letter ind
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原文链接: https://leetcode-cn.com/problems/custom-sort-string
英文原文You are given two strings order and s. All the words of
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英文原文Given a Tic-Tac-Toe board as a string array board,
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原文链接: https://leetcode-cn.com/problems/number-of-lines-to-write-string
英文原文You are given a string s of lowercase Engli
原文链接: https://leetcode-cn.com/problems/expressive-words
英文原文Sometimes people repeat letters to represent extra feeling
原文链接: https://leetcode-cn.com/problems/subdomain-visit-count
英文原文A website domain "discuss.leetcode.com" con
原文链接: https://leetcode-cn.com/problems/ambiguous-coordinates
英文原文We had some 2-dimensional coordinates, like "(1,
原文链接: https://leetcode-cn.com/problems/most-common-word
英文原文Given a string paragraph and a string array of the banned