随笔分类 - Leetcode刷题笔记
摘要：题目：Given a linked list, remove the nth node from the end of list and return its head. For example, Note:Given n will always be valid.Try to do this in
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摘要：题目：Given an array S of n integers, find three integers in S such that the sum is closest to a given number, target. Return the sum of the three intege
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摘要：题目：Given an array S of n integers, are there elements a, b, c in S such that a + b + c = 0? Find all unique triplets in the array which gives the sum
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摘要：题目：Given n non-negative integers a1, a2, ..., an, where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two en
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摘要：转载至http://blog.csdn.net/hk2291976/article/details/51107778 问题介绍 这是个超级超级经典的分治算法！！这个问题大致是说，如何在给定的两个有序数组里面找其中的中值，或者变形问题，如何在2个有序数组数组中查找Top K的值（Top K的问题可以转
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摘要：题目：Given a string, find the length of the longest substring without repeating characters. Examples: Given "abcabcbb", the answer is "abc", which the l
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摘要：题目： Implement pow(x, n). Example 1: Example 2: 题意及分析：实现求x的n次方，使用分治法，复杂度降低到log2n 代码：
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摘要：题目： Given an array of non-negative integers, you are initially positioned at the first index of the array. Each element in the array represents your m
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摘要：题目： Given a set of non-overlapping intervals, insert a new interval into the intervals (merge if necessary). You may assume that the intervals were in
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摘要：题目： Given a matrix of m x n elements (m rows, n columns), return all elements of the matrix in spiral order. For example,Given the following matrix: [
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摘要：题目： Given an integer n, generate a square matrix filled with elements from 1 to n2 in spiral order. For example,Given n = 3, You should return the fol
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摘要：题目： Given a list, rotate the list to the right by k places, where k is non-negative. Example: 题意及分析：从右到左第n个点进行翻转链表。主要是要找到翻转点和翻转点前面一个点，然后将最后一个点的next设置为
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摘要：题目： Given two binary strings, return their sum (also a binary string). For example,a = "11"b = "1"Return "100". 题意及分析：求两个用字符串表示 的二进制数的和。主要是判断每次相加的和是否大
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摘要：题目： Validate if a given string is numeric. Some examples:"0" => true" 0.1 " => true"abc" => false"1 a" => false"2e10" => true Note: It is intended for
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摘要：题目： Given a non-negative integer represented as a non-empty array of digits, plus one to the integer. You may assume the integer do not contain any le
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摘要：题目： Given an array of words and a length L, format the text such that each line has exactly L characters and is fully (left and right) justified. You
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摘要：题目： Given an absolute path for a file (Unix-style), simplify it. For example,path = "/home/", => "/home"path = "/a/./b/../../c/", => "/c" 题意及分析：给出一个un
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摘要：题目： Given two words word1 and word2, find the minimum number of steps required to convert word1 to word2. (each operation is counted as 1 step.) You h
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摘要：题目： iven a m x n matrix, if an element is 0, set its entire row and column to 0. Do it in place. click to show follow up. Follow up: Did you use extra
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摘要：题目： Given an array with n objects colored red, white or blue, sort them so that objects of the same color are adjacent, with the colors in the order r
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