摘要： Longest Valid Parentheses问题：Given a string containing just the characters'('and')', find the length of the longest valid (well-formed) parentheses sub... 阅读全文

摘要： Minimum Window Substring问题：Given a string S and a string T, find the minimum window in S which will contain all the characters in T in complexity O(n)... 阅读全文

摘要： Edit Distance问题：Given two wordsword1andword2, find the minimum number of steps required to convertword1toword2. (each operation is counted as 1 step.)... 阅读全文

摘要： Substring with Concatenation of All Words问题：You are given a string,s, and a list of words,words, that are all of the same length. Find all starting in... 阅读全文

摘要： Insert Interval问题：Given a set ofnon-overlappingintervals, insert a new interval into the intervals (merge if necessary).You may assume that the interv... 阅读全文

摘要： Text Justification问题：iven an array of words and a lengthL, format the text such that each line has exactlyLcharacters and is fully (left and right) ju... 阅读全文

摘要： Wildcard Matching问题：'?' Matches any single character.'*' Matches any sequence of characters (including the empty sequence).The matching should cover t... 阅读全文

摘要： Valid Number问题：Validate if a given string is numeric.Some examples:"0"=>true" 0.1 "=>true"abc"=>false"1 a"=>false"2e10"=>trueNote:It is intended for t... 阅读全文

摘要： Multiply Strings问题：Given two numbers represented as strings, return multiplication of the numbers as a string.Note: The numbers can be arbitrarily lar... 阅读全文

摘要： Course Schedule问题：There are a total ofncourses you have to take, labeled from0ton - 1.Some courses may have prerequisites, for example to take course ... 阅读全文