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[LeetCode] 747. Largest Number At Least Twice of Others_Easy
In a given integer array nums, there is always exactly one largest element. Find whether the largest element in the array is at least twice as much as ...
分类:其他好文   时间:2018-08-28 13:07:04    阅读次数:201
Playrix Codescapes Cup (Codeforces Round #413, rated, Div. 1 + Div. 2) C. Fountains 【树状数组维护区间最大值】
题目传送门:http://codeforces.com/contest/799/problem/C C. Fountains time limit per test 2 seconds memory limit per test 256 megabytes input standard input ...
分类:编程语言   时间:2018-08-26 20:51:06    阅读次数:184
Count Numbers(矩阵快速幂)
Count Numbers 题目描述 Now Alice wants to sum up all integers whose digit sum is exactly ab .However we all know the number of this kind of integers are u ...
分类:其他好文   时间:2018-08-25 21:48:53    阅读次数:256
1023 Have Fun with Numbers
Notice that the number 123456789 is a 9-digit number consisting exactly the numbers from 1 to 9, with no duplication. Double it we will obtain 2469135 ...
分类:其他好文   时间:2018-08-25 00:34:05    阅读次数:233
[LeetCode&Python] Problem1: Two Sum
Problem Description: Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that eac ...
分类:编程语言   时间:2018-08-24 23:41:35    阅读次数:196
556. Next Greater Element III下一个更大的数字
[抄题]: Given a positive 32-bit integer n, you need to find the smallest 32-bit integer which has exactly the same digits existing in the integer n and ...
分类:其他好文   时间:2018-08-21 22:40:44    阅读次数:313
mysql索引
天天和数据库打交道,powderdesigner设计表,数据库简单操作——增删改,上面是操作数据库大头,项目也用到redis,读写分离的;数据慢慢变多,开始时候表没有建什么索引,后面会慢慢多起来。 索引:我理解这个和书的目录相同,通过特定方式快速查找要的内容, 原因:索引查找过程中就要产生磁盘I/O ...
分类:数据库   时间:2018-08-20 23:49:39    阅读次数:252
PAT 1126 Eulerian Path
In graph theory, an Eulerian path is a path in a graph which visits every edge exactly once. Similarly, an Eulerian circuit is an Eulerian path which ...
分类:其他好文   时间:2018-08-20 17:22:11    阅读次数:225
167. Two Sum II - Input array is sorted
Given an array of integers that is already sorted in ascending order, find two numbers such that they add up to a specific target number. The function ...
分类:其他好文   时间:2018-08-19 14:47:18    阅读次数:194
CF1016C Vasya And The Mushrooms 题解
这道题一眼就是一个DP(大雾),但题目中有一句很有趣的话 “He wants to visit all the cells exactly once and maximize the total weight of the collected mushrooms.” 也就是每个格子必须且只能经过一次 ...
分类:其他好文   时间:2018-08-18 13:09:47    阅读次数:206
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