size

选择排序,插入排序学习笔记

家住魔仙堡 提交于 2019-11-30 01:39:53
[算法教程] 几种经典排序的实现 @blibili正月点灯笼 选择排序: 对于一个乱序数组(size=n) 1.寻找其中的最大(小)值 2.放到最右边(和最后一位交换位置) 3.再从原数组size=n-1同样寻找最大值(此时这个是整个数组第二大的值了(如果有两个相同最大值不影响)) 4.继续放到在size=n-1的最右处 5.一直循环到size=1结束排序 数据举例: 3 7 4 2 6 1 (size = 6) 遍历第一遍,找到max = 7;放到最右边,此时: 3 1 4 2 6 7 -->我们需要的是 3 1 4 2 6(size = 5) 遍历,找到max = 6;放到最右边(当然6本来就在最右边,操作后仍不变),此时: 3 1 4 2 6 --> 3 1 4 2(size = 4) 遍历,找到max = 4;放到最右边 3 1 2 4 --> 3 1 2 (size = 3)以此类推 代码实现: #include<stdio.h> #include<iostream> using namespace std; void selection_sort(int *arr,int n); int findmax(int *arr,int n); void swap(int *a,int *b); int main(){ int arr[]={1,3,4,5,7,3,88,44

迭代器

懵懂的女人 提交于 2019-11-30 01:37:27
//it.next()返回迭代器的下一个元素//it.hasNext()检测集合中是否还有元素object iterator_test { def main(args:Array[String]): Unit ={// val it=Iterator("baidu","google","taobao","jindong")// //迭代器的长度//// println("size:"+it.size) //4//// println("length:"+it.length) //0// while(it.hasNext){// println(it.next())// } val ita=Iterator(20,40,30,70,50)// println("max:"+ita.max) println("size:"+ita.size) //5 println("length:"+ita.length) //0 }} 来源: https://www.cnblogs.com/hapyygril/p/11544234.html

Why aren't arrays expandable?

家住魔仙堡 提交于 2019-11-30 00:55:39
问题 When we create an array, we cannot change its size; it's fixed. OK, seems nice, we can create a new bigger array and copy the values one by one and that's little slow. What's the technical background of it? 回答1: This question didn't mention a language so I'm going to choose 'C' based arrays for my answer. Arrays are allocated as a single chunk of memory. Growing an array is problematic because the only way to do it properly is to grow it at the end. For a growth of size N there must be at

Sizing the radiobutton

℡╲_俬逩灬. 提交于 2019-11-30 00:43:37
问题 I have some radiobuttons in an app that works with touch. Because the end-user can have thick fingers, I want to make the circle and text int he radiobutton bigger. Problem is, I can only make the text bigger, not the circle in the radiobutton. <RadioButton VerticalAlignment="Center" x:Name="rbtnContainers" Click="SetContainers" FontSize="18">Containers</RadioButton> Using height doesn't work either. It makes the radiobutton bigger, but the circle remains the same. Any hint or answer is

C# Winform控件自适应窗体大小

别说谁变了你拦得住时间么 提交于 2019-11-30 00:24:54
需求:当窗体尺寸动态改变时,窗体中的各种控件(包括Panel以及Panel中的子控件)可以动态调节自身大小,以适应窗体内容比例。 方法: 第一步,新建一个类,代码如下: class Resize { private Form _form; public Resize(Form form) { int count = form.Controls.Count * 2 + 2; float[] factor = new float[count]; int i = 0; factor[i++] = form.Size.Width; factor[i++] = form.Size.Height; foreach (Control ctrl in form.Controls) { factor[i++] = ctrl.Location.X / (float)form.Size.Width; factor[i++] = ctrl.Location.Y / (float)form.Size.Height; ctrl.Tag = ctrl.Size; } form.Tag = factor; this._form = form; } public void Form1_Resize(object sender, EventArgs e) { float[] scale = (float[])this

torch.nn.Conv2d()函数和channel的理解

一世执手 提交于 2019-11-29 23:45:05
import torch x = torch . randn ( 2 , 3 , 4 , 5 ) conv1 = nn . Conv2d ( 3 , 2 , kernel_size = 3 ) out1 = cov1 ( x ) print ( "output1 size: " , out1 . shape ) conv2 = nn . Conv2d ( 3 , 2 , kernel_size = 3 , padding = 1 ) out2 = cov2 ( x ) print ( "output2 size: " , out2 . shape ) conv3 = nn . Conv2d ( 3 , 2 , kernel_size = 3 , padding = 1 , stride = 2 ) out3 = cov3 ( x ) print ( "output3 size: " , out3 . shape ) 输出: output1 size : torch . Size ( [ 2 , 2 , 2 , 3 ] ) output2 size : torch . Size ( [ 2 , 2 , 4 , 5 ] ) output3 size : torch . Size ( [ 2 , 2 , 2 , 3 ] ) 输入: X 【 batch_size , in_channels

JAVA学习第二周课后作业

半腔热情 提交于 2019-11-29 23:37:52
Java 的基本运行单位是类。 类由数据成员和函数成员组成。 变量之间可以相互转换。 String是一个类。 static是静态、全局的意思。 经过测试,Java的枚举类型定义的Size与String一样都不是Java的原有数据类型 适当的修改测试的原程序代码: package shangke.dierzhou; public class EnumTest { public static void main(String[] args) { Size s=Size.SMALL; Size t=Size.LARGE; //s和t引用同一个对象? System.out.println(s==t); // //是原始数据类型吗? System.out.println(s.getClass().isPrimitive()); //从字符串中转换 Size u=Size.valueOf("SMALL"); System.out.println(s==u); //true //列出它的所有值 String name="name"; System.out.println(name.getClass().isPrimitive()); int sss=1; System.out.println(); System.out.println(); int i=0; System.out.println

how can i know the allocated memory size of pointer variable in c [duplicate]

[亡魂溺海] 提交于 2019-11-29 22:42:41
问题 This question already has answers here : Determine size of dynamically allocated memory in C (14 answers) Closed 7 months ago . I have faced some problem in this case can you please your ideas. main() { char *p=NULL; p=(char *)malloc(2000 * sizeof(char)); printf("size of p = %d\n",sizeof (p)); } In this program Its print the 4 that (char *) value,but i need how many bytes allocated for that. 回答1: You could also implement a wrapper for malloc and free to add tags (like allocated size and other

mysql load testing tools

怎甘沉沦 提交于 2019-11-29 22:16:15
问题 I want to calculate the each row size of a table. are there any tools available for this. Also Does anyone aware of any load testing tools. Thanks in advance. Regards, Manasi 回答1: Calculate average row size with: SHOW TABLE STATUS [FROM databasename] [LIKE 'pattern'] Super Smack is a benchmarking, stress testing, and load generation tool for MySQL (and PostgreSQL). 来源: https://stackoverflow.com/questions/1593498/mysql-load-testing-tools

Get Actual Height of View

走远了吗. 提交于 2019-11-29 22:07:29
问题 Simple question, perhaps frustratingly-complex-but-hopefully-simple answer? What is the "Best Practice" for getting the actual height of an element that has its size set to FILL_PARENT? 回答1: Definitely is more complicated than it seems it should be. An easier way that I've found compared to the answer in the suggested question, is to use a ViewTreeObserver. In your onCreate() method, you can use some code such as the following: TextView textView = (TextView)findViewById(R.id.my_textview);