摘要：Title:You are given an n x n 2D matrix representing an image.Rotate the image by 90 degrees (clockwise).Note:You have to rotate the im... 阅读全文

摘要：Title：Given a collection of numbers that might contain duplicates, return all possible unique permutations.For example,[1,1,2] have th... 阅读全文

摘要：TItle:Given a collection of distinct numbers, return all possible permutations.For example,[1,2,3] have the following permutations:[ ... 阅读全文

摘要：Title:Given two non-negative integers num1 and num2 represented as strings, return the product of num1 and num2.Note:The length of bot... 阅读全文

摘要：Title:iven a set of candidate numbers (C) (without duplicates) and a target number (T), find all unique combinations in C where the ca... 阅读全文

摘要：TiTle:The count-and-say sequence is the sequence of integers with the first five terms as following:1. 12. 113. 214. 1... 阅读全文

摘要：Title:Determine if a Sudoku is valid, according to: Sudoku Puzzles - The Rules.The Sudoku board could be partially filled, where empty... 阅读全文

摘要：Title:Given a sorted array and a target value, return the index if the target is found. If not, return the index where it would be if ... 阅读全文

摘要：Title：Given an array of integers sorted in ascending order, find the starting and ending position of a given target value.Your algorit... 阅读全文

摘要：Title：Suppose an array sorted in ascending order is rotated at some pivot unknown to you beforehand.(i.e., 0 1 2 4 5 6 7 might become ... 阅读全文

摘要：Title：Implement next permutation, which rearranges numbers into the lexicographically next greater permutation of numbers.If such arra... 阅读全文

摘要：Title:Divide two integers without using multiplication, division and mod operator.If it is overflow, return MAX_INT.这道题就是实现除法，而且不能用到乘法... 阅读全文

摘要：在linux下，编译运行c或者c++或python等非常简单，因为包含了gcc，g++编译器和python解释器。在windows下，可以利用MINGW安装gcc和g++编译器。MINGW：是Minimalist GNUfor Windows的缩写。MINGW提供了一... 阅读全文

摘要：Title:Implement strStr().Returns the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack.这道题是... 阅读全文

摘要：Title：Given an array and a value, remove all instances of that value in place and return the new length.Do not allocate extra space fo... 阅读全文

摘要：Title:Given a sorted array, remove the duplicates in place such that each element appear only once and return the new length.Do not al... 阅读全文

摘要：Title:Given a linked list, swap every two adjacent nodes and return its head.For example,Given 1->2->3->4, you should return the list ... 阅读全文

摘要：Title：Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses.For example, given n = 3,... 阅读全文

摘要：Title:Merge two sorted linked lists and return it as a new list. The new list should be made by splicing together the nodes of the fir... 阅读全文

摘要：Title:Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid.The bracke... 阅读全文