原文链接: https://leetcode-cn.com/problems/smallest-k-length-subsequence-with-occurrences-of-a-letter
英文原文You are given a
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原文链接: https://leetcode-cn.com/problems/kth-distinct-string-in-an-array
英文原文A distinct string is a string that is prese
原文链接: https://leetcode-cn.com/problems/plates-between-candles
英文原文There is a long table with a line of plates and cand
原文链接: https://leetcode-cn.com/problems/number-of-valid-move-combinations-on-chessboard
英文原文There is an 8 x 8 chessboar
原文链接: https://leetcode-cn.com/problems/check-if-numbers-are-ascending-in-a-sentence
英文原文A sentence is a list of tokens
原文链接: https://leetcode-cn.com/problems/number-of-valid-words-in-a-sentence
英文原文A sentence consists of lowercase letter
原文链接: https://leetcode-cn.com/problems/check-whether-two-strings-are-almost-equivalent
英文原文Two strings word1 and word2
原文链接: https://leetcode-cn.com/problems/check-if-an-original-string-exists-given-two-encoded-strings
英文原文An original st
原文链接: https://leetcode-cn.com/problems/count-vowel-substrings-of-a-string
英文原文A substring is a contiguous (non-empty)
原文链接: https://leetcode-cn.com/problems/vowels-of-all-substrings
英文原文Given a string word, return the sum of the number
