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python code practice: 快排、归并、堆排的实现,双指针/滑动窗口技术
基本原理就不做介绍了, 很基础的数据结构课程知识.私下回顾即可,主要学习代码. 1.双指针 https://leetcode-cn.com/problems/two-sum-ii-input-array-is-sorted/description/?utm_source=LCUS&utm_mediu ...
分类:编程语言   时间:2020-03-15 13:20:39    阅读次数:70
Excel函数公式
Offset函数: 作用:返回对单元格或单元格区域中指定行数和列数的区域的引用。 语法:OFFSET(reference, rows, cols, [height], [width]),reference为偏移量的参考位置,rows偏移的行数,cols偏移的列数,height和width为指定返回的 ...
分类:其他好文   时间:2020-03-15 10:01:00    阅读次数:59
Cyber Security - Palo Alto Firewall V-Wires
Leveraging V-Wires Bridge two physical connections and apply security Policies without influencing any routing decision(transparent Firewall inspectio ...
分类:其他好文   时间:2020-03-15 09:57:07    阅读次数:59
1031. Maximum Sum of Two Non-Overlapping Subarrays
Given an array A of non-negative integers, return the maximum sum of elements in two non-overlapping (contiguous) subarrays, which have lengths L and  ...
分类:移动开发   时间:2020-03-15 09:54:01    阅读次数:75
[HTML 5] Understanding DOM loading event & 'async', 'defer' keyword
There are two types of Loading events: DOMContentLoaded Loaded DOMEContentLoaded: It happens after index.html has been parsed. <!DOCTYPE html> <html> ...
分类:Web程序   时间:2020-03-15 09:41:43    阅读次数:70
D - Pair of Topics
The next lecture in a high school requires two topics to be discussed. The ii-th topic is interesting by aiaiunits for the teacher and by bibi units f ...
分类:其他好文   时间:2020-03-14 23:59:09    阅读次数:158
一篇文章让你了解CSS中flex布局中的网格布局
前段时间我刚讲了flex布局中的弹性布局,今天我就再来讲讲网格布局。 网格布局相对于弹性布局个人觉得较为简单, 作用在容器上的: display : grid grid-template-columns : 设置列数 grid-template-rows : 设置行数 fr单位 repeat()方法 ...
分类:Web程序   时间:2020-03-14 18:30:52    阅读次数:84
PAT.Product of polynomials(map)
1009 Product of Polynomials (25分) This time, you are supposed to find A×B where A and B are two polynomials. Input Specification: Each input file cont ...
分类:其他好文   时间:2020-03-14 17:02:41    阅读次数:48
dfs之选数问题
Problem 给定n个正数,从中选出K个来使得他们的和为S,请问一共有多少种方法? Input: The first line, an integer T<=100, indicates the number of test cases. For each case, there are two ...
分类:其他好文   时间:2020-03-14 12:52:39    阅读次数:49
[poj1724]Roads
欢迎回来,这里是做图论已经做到疯了的爱上了图论的Darth Victor。没错今天又是图论题,最近一直在刷图论。 题目 N cities named with numbers 1 ... N are connected with one-way roads. Each road has two pa ...
分类:其他好文   时间:2020-03-14 10:59:13    阅读次数:51
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