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Decode WaysA message containing letters from A-Z is being encoded to numbers using the following mapping:'A' -> 1'B' -> 2...'Z' -> 26Given an encoded ... 阅读全文
2014年11月22日
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Substring with Concatenation of All WordsYou are given a string, S, and a list of words, L, that are all of the same length. Find all starting indices... 阅读全文
2014年11月21日
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Longest Valid ParenthesesGiven a string containing just the characters '(' and ')', find the length of the longest valid (well-formed) parentheses sub... 阅读全文
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Generate ParenthesesGiven n pairs of parentheses, write a function to generate all combinations of well-formed parentheses.For example, given n = 3, a... 阅读全文
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LRU CacheDesign and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations:getandset.get(key)- Get... 阅读全文
2014年11月19日
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Maximal RectangleGiven a 2D binary matrix filled with 0's and 1's, find the largest rectangle containing all ones and return its area.Show TagsHave yo... 阅读全文
2014年11月18日
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Min Stack My SubmissionsQuestionSolutionDesign a stack that supports push, pop, top, and retrieving the minimum element in constant time.push(x) -- Pu... 阅读全文
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Restore IP AddressesMy SubmissionsQuestionSolutionGiven a string containing only digits, restore it by returning all possible valid IP address combina... 阅读全文
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Longest Common Prefix Total Accepted: 24665 Total Submissions: 92370My SubmissionsQuestionSolutionWrite a function to find the longest common prefix s... 阅读全文
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Regular Expression Matching My Submissions Question Solution Implement regular expression matching with support for '.' and '*'. '.' Matches any singl 阅读全文
