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题目：Given a string S, find the longest palindromic substring in S. You may assume that the maximum ... 阅读全文
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题目：Implement wildcard pattern matching with support for '?' and '*'.'?' Matches any single charact... 阅读全文
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题目：Given an integer n, generate a square matrix filled with elements from 1 to n2 in spiral order.... 阅读全文
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题目：Given a matrix of m x n elements (m rows, n columns), return all elements of the matrix in spir... 阅读全文
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题目：Given an array S of n integers, find three integers in S such that the sum is closest to a give... 阅读全文
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题目：Given a sorted array and a target value, return the index if the target is found. If not, retur... 阅读全文
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题目：Follow up for "Search in Rotated Sorted Array":What if duplicates are allowed ? Would this affe... 阅读全文
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题目：Given a collection of numbers that might contain duplicates, return all possible unique permuta... 阅读全文
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题目：Given a collection of numbers, return all possible permutations.For example,[1,2,3] have the fo... 阅读全文
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题目：Given an array S of n integers, are there elements a, b, c in S such that a + b + c = 0? Find a... 阅读全文