Description Given n books and each book has the same number of pages. There are k persons to copy these books and the i-th person needs times[i] minutes to copy a book. Each person can copy any number of books and they start copying at the same time.…

Given an array A of integer with size of n( means n books and number of pages of each book) and k people to copy the book. You must distribute the continuous id books to one people to copy. (You can give book A[1],A[2] to one people, but you cannot g…

Description Given n books and the i-th book has pages[i] pages. There are k persons to copy these books. These books list in a row and each person can claim a continous range of books. For example, one copier can copy the books from i-th to j-th cont…

Classic DP. The initial intuitive O(k*n^2) solution is like this: class Solution { public: /** * @param pages: a vector of integers * @param k: an integer * @return: an integer */ int copyBooks(vector<int> &pages, int k) { size_t n = pages.size(…

141. Sqrt(x) https://www.lintcode.com/problem/sqrtx/description?_from=ladder&&fromId=4 public class Solution { /** * @param x: An integer * @return: The sqrt of x */ public int sqrt(int x) { // write your code here if(x==0){ return 0; } long start…

Yet Another Source Code for LintCode Current Status : 232AC / 289ALL in Language C++, Up to date (2016-02-10) For more problems and solutions, you can see my LintCode repository. I'll keep updating for full summary and better solutions. See cnblogs t…

1 - 从strStr谈面试技巧与代码风格 必做题: 13.字符串查找 要求:如题 思路:(自写AC)双重循环,内循环读完则成功 还可以用Rabin,KMP算法等 public int strStr(String source, String target) { if (source == null || target == null) { return -1; } char[] sources = source.toCharArray(); char[] targets = target.to…

Java Algorithm Problems 程序员的一天 从开始这个Github已经有将近两年时间, 很高兴这个repo可以帮到有需要的人. 我一直认为, 知识本身是无价的, 因此每逢闲暇, 我就会来维护这个repo, 给刷题的朋友们一些我的想法和见解. 下面来简单介绍一下这个repo: README.md: 所有所做过的题目 ReviewPage.md: 所有题目的总结和归纳(不断完善中) KnowledgeHash2.md: 对所做过的知识点的一些笔记 SystemDesign.md:…

二分法模板 非递归版本: public class Solution { /** * @param A an integer array sorted in ascending order * @param target an integer * @return an integer */ public int findPosition(int[] nums, int target) { if (nums == null || nums.length == 0) { return -1; } i…

备份数据库:pg_dump -h localhost -U root demo02 > /home/arno/dumps/demo02.bak 恢复数据库:psql -h localhost -U root -d demo <  demo.bak 备份表:pg_dump -h localhost -U root demo02 -t books > /home/arno/dumps/books.bak 恢复表:psql -h localhost -U root -d demo -t boo…