K SUM My Submissions http://www.lintcode.com/en/problem/k-sum/ 题目来自九章算法 13% Accepted Given n distinct positive integers, integer k (k <= n) and a number target. Find k numbers where sum is target. Calculate how many solutions there are? Example Given…

Subarray Sum 原题链接:http://lintcode.com/zh-cn/problem/subarray-sum/# Given an integer array, find a subarray where the sum of numbers is zero. Your code should return the index of the first number and the index of the last number. 样例 Given [-3, 1, 2, -…

LeetCode 1 Two Sum 解题报告 偶然间听见leetcode这个平台,这里面题量也不是很多200多题,打算平时有空在研究生期间就刷完,跟跟多的练习算法的人进行交流思想,一定的ACM算法积累可以对以后在对算法中优化带来好处.Ok,今天是我做的第一题Add Two Sum. 题目要求 Given an array of integers, find two numbers such that they add up to a specific target number. The fu…

LeetCode 2 Add Two Sum 解题报告 LeetCode第二题 Add Two Sum 首先我们看题目要求: You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbers and return…

[九度OJ]题目1174:查找第K小数 解题报告 标签(空格分隔): 九度OJ 原题地址:http://ac.jobdu.com/problem.php?pid=1174 题目描述: 查找一个数组的第K小的数,注意同样大小算一样大. 如 2 1 3 4 5 2 第三小数为3. 输入: 输入有多组数据. 每组输入n,然后输入n个整数(1<=n<=1000),再输入k. 输出: 输出第k小的整数. 样例输入: 6 2 1 3 5 2 2 3 样例输出: 3 Ways 又没有一遍A,是忘记写usin…

[LeetCode]402. Remove K Digits 解题报告(Python) 标签(空格分隔): LeetCode 作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址:https://leetcode.com/problems/remove-k-digits/description/ 题目描述: Given a non-negative integer num represented as a string, rem…

[剑指Offer]最小的K个数 解题报告(Python) 标签(空格分隔): 剑指Offer 题目地址:https://www.nowcoder.com/ta/coding-interviews 题目描述: 输入n个整数,找出其中最小的K个数.例如输入4,5,1,6,2,7,3,8这8个数字,则最小的4个数字是1,2,3,4,. 解题方法 这个是面试被问过的题目,做法就是使用一个堆来做,特别适合当数据很大的时候.这个其实相当于一个信息检索的过程.据说百度喜欢问此类问题. heapq.nlarge…

Combination Sum Combination Sum Total Accepted: 25850 Total Submissions: 96391 My Submissions Question Solution Given a set of candidate numbers (C) and a target number (T), find all unique combinations in C where the candidate numbers sums to T. The…

zerosum解题报告------------------------------------------------------------------------------------------------------------------------------------------------[题目] 给你N. 把1到N依次写出,每相邻两个数字中间加上一个字符,三选一:'+','-',' '. 如此,便可形成很多表达式,把其中计算结果为0的按字典序输出.[数据范围] 3<=N<…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 小根堆 日期 题目地址:https://leetcode.com/problems/maximize-sum-of-array-after-k-negations/ 题目描述 Given an array A of integers, we must modify the array in the following way: we choose a…