Fast Power 原题链接:http://lintcode.com/en/problem/fast-power/# Calculate the an % b where a, b and n are all 32bit integers. Example For 231 % 3 = 2 For 1001000 % 1000 = 0 Challenge O(logn) Tags Expand SOLUTION 1: 实际上这题应该是suppose n > 0的. 我们利用 取模运算的乘法法则:…

Majority Number 原题链接:http://lintcode.com/en/problem/majority-number/# Given an array of integers, the majority number is the number that occurs more than half of the size of the array. Find it. Example For [1, 1, 1, 1, 2, 2, 2], return 1 Challenge O(…

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…

Minimum Subarray 原题链接: http://lintcode.com/zh-cn/problem/minimum-subarray/# Given an array of integers, find the subarray with smallest sum. Return the sum of the subarray. 注意 The subarray should contain at least one integer. 样例 For [1, -1, -2, 1], r…

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, -…

我们首先将所有电池排序,那么我们可以找到一组最优方案,使得一台机器的能量之差是相邻两电池的能量之差. 然后我们就二分这个答案,从前往后贪心地选这个数对,然后看是否所有的数对都是满足条件的. 假设这个数对是 i - 1, i,并且是第 j 个数对,那么我们称满足条件为: 2nk - i + 2 >= 2k(n - j + 1) 意思就是能拿出足够多的电池来组成机器人. 然后注意特判:如果不能选出足够多的数对就返回 false,我在这里 WA 到死... 毕竟 Gromah 太弱,只会做水题. #i…

ACM-ICPC 2017 Asia HongKong 解题报告 任意门:https://nanti.jisuanke.com/?kw=ACM-ICPC%202017%20Asia%20HongKong 按AC次序: D - Card collection In an online game, a player can collect different types of power cards. Each power card can enable a player to have a uni…

LeetCode解题报告:Linked List Cycle && Linked List Cycle II 1题目 Linked List Cycle Given a linked list, determine if it has a cycle in it. Follow up: Can you solve it without using extra space? Linked List Cycle II Given a linked list, return the node w…

本文出自   http://blog.csdn.net/shuangde800 刘汝佳<算法竞赛入门经典-训练指南>的动态规划部分的习题Beginner  打开 这个专题一共有25题,刷完后对dp的感觉提升了不少. 现把解题报告整理了一下,希望对大家能有帮助. 入门习题 (Exercises: Beginner) UVa11584 Partitioning by Palindromes 入门题目 LA4256 Salesman 入门题目 UVa10534 Wavio Sequence 可以转化…

Sort ColorsGiven 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 red, white and blue. Here, we will use the integers 0, 1, and 2 to represent the color red, wh…