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Largest Number At Least Twice of Others
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:2018-03-20 22:08:52    阅读次数:197
1134. Vertex Cover (25)
A vertex cover of a graph is a set of vertices such that each edge of the graph is incident to at least one vertex of the set. Now given a graph with ...
分类:其他好文   时间:2018-03-14 20:07:12    阅读次数:193
poj3279(dfs+二进制枚举思路)
题意转载自https://www.cnblogs.com/blumia/p/poj3279.html 题目属性:DFS相关题目:poj3276题目原文:【desc】Farmer John knows that an intellectually satisfied cow is a happy co ...
分类:其他好文   时间:2018-03-10 13:56:16    阅读次数:239
最大子数组问题/Maximum Subarray
问题描述: Find the contiguous subarray within an array (containing at least one number) which has the largest sum. For example, given the array [?2,1,?3,4 ...
分类:编程语言   时间:2018-03-09 20:38:16    阅读次数:246
LightOj 1215 Finding LCM
Discription LCM is an abbreviation used for Least Common Multiple in Mathematics. We say LCM (a, b, c) = L if and only if L is the least integer which ...
分类:其他好文   时间:2018-03-08 20:20:29    阅读次数:166
LCA—树链剖分求解
LCA(Least Common Ancestors) 即最近公共祖先,是指在有根树中,找出某两个结点u和v最近的公共祖先。 树链剖分求解 用的不多,但异常高效 不懂树链剖分的小伙伴看这里、 "树链剖分—学习笔记" 我们先把两个dfs预处理做好 接着进入询问lca(u,v)的环节 int u=rea ...
分类:其他好文   时间:2018-03-08 14:08:15    阅读次数:136
ISLR第六章Linear Model Selection and Regularization
本章主要介绍几种可替代普通最小二乘拟合的其他一些方法。 Why might we want to use another fitting procedure instead of least squares? better prediction accuracy(预测精度) and better m ...
分类:其他好文   时间:2018-03-06 20:23:57    阅读次数:205
[leetcode]Maximum Subarray
问题描写叙述: Find the contiguous subarray within an array (containing at least one number) which has the largest sum. For example, given the array [?2,1,?3 ...
分类:其他好文   时间:2018-03-06 14:43:19    阅读次数:149
mysql greatest函数
前几天 遇到一个需求 是要从三列中拿出其中的最大值, 想了很久没有想出来。 于是查了下。 mysql 提供了 greatest 和 LEAST 都使用N个参数,并分别返回最大和最小值。 下面说明GREATEST和LEAST函数的语法: 参数可能具有混合数据类型。以下比较规则适用于这两个函数: 如果任 ...
分类:数据库   时间:2018-03-05 17:08:44    阅读次数:838
Ubuntu系统升级遇到问题记录
The upgrade needs a total of 99.7 M free space on disk '/boot'. Please free at least an additional 53.7 M of disk space on '/boot'. You can remove old ...
分类:系统相关   时间:2018-03-05 13:43:49    阅读次数:625
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