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886. Possible Bipartition Medium We want to split a group of n people (labeled from 1 to n) into two groups of any size. Each person may dislike some 阅读全文
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2262. Total Appeal of A String Hard The appeal of a string is the number of distinct characters found in the string. For example, the appeal of "abbca 阅读全文
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785. Is Graph Bipartite? Medium 4979279Add to ListShare There is an undirected graph with n nodes, where each node is numbered between 0 and n - 1. Yo 阅读全文
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1057. Campus Bikes Medium On a campus represented on the X-Y plane, there are n workers and m bikes, with n <= m. You are given an array workers of le 阅读全文
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881. Boats to Save People Medium You are given an array people where people[i] is the weight of the ith person, and an infinite number of boats where 阅读全文
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31. Next Permutation Medium A permutation of an array of integers is an arrangement of its members into a sequence or linear order. For example, for a 阅读全文
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1570. Dot Product of Two Sparse Vectors Medium 858114Add to ListShare Given two sparse vectors, compute their dot product. Implement class SparseVecto 阅读全文
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214. Shortest Palindrome Hard You are given a string s. You can convert s to a palindrome by adding characters in front of it. Return the shortest pal 阅读全文
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2116. Check if a Parentheses String Can Be Valid Medium A parentheses string is a non-empty string consisting only of '(' and ')'. It is valid if any 阅读全文
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318. Maximum Product of Word Lengths Given a string array words, return the maximum value of length(word[i]) * length(word[j]) where the two words do 阅读全文
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