Skip to content

Instantly share code, notes, and snippets.

@kishida
kishida / ThreadMultiWithLock.java
Created January 23, 2016 20:32
Multi thread with lock.
import java.util.stream.Stream;
/**
*
* @author naoki
*/
public class ThreadMultiWithLock {
static class Context{
String str;
int i = 0;
@kishida
kishida / Syllogism.java
Created January 30, 2016 22:03
Syllogism
public interface Syllogism {
interface さかな{}
interface およぐ{}
interface さば{}
さかな majorPremise(さば s);
およぐ minorPremise(さかな f);
default およぐ conclusion(さば s){
return minorPremise(majorPremise(s));
@kishida
kishida / RoundError.java
Created January 31, 2016 10:01
Round error
long max = 9_000_000_000_000_000_001L;
System.out.println(max);
double fl = max;
System.out.println(fl);
long max_i = (long) fl;
System.out.println(max_i);
@kishida
kishida / Random.java
Created February 5, 2016 03:02
Linear congruential generators
public class Random {
public static void main(String[] args) {
for(int i = 0; i < 100; ++i){
System.out.println(rand());
}
}
static int seed = 55;
@kishida
kishida / Random2D.java
Created February 5, 2016 03:03
Plot linear congruential generators
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
/**
*
* @author naoki
*/
@kishida
kishida / TSP.java
Created February 5, 2016 03:05
TSP with random
import java.awt.Graphics;
import java.awt.GridLayout;
import java.awt.image.BufferedImage;
import java.util.ArrayList;
import java.util.DoubleSummaryStatistics;
import java.util.List;
import java.util.Random;
import java.util.stream.Collectors;
import java.util.stream.IntStream;
import javax.swing.ImageIcon;
@kishida
kishida / TSPGA.java
Last active February 5, 2016 08:53
TSP with GA
import java.awt.Graphics;
import java.awt.GridLayout;
import java.awt.image.BufferedImage;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.DoubleSummaryStatistics;
import java.util.List;
import java.util.Random;
import java.util.stream.Collectors;
@kishida
kishida / Montecarlo.java
Created February 5, 2016 09:11
Montecarlo Simulation
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.util.Random;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
/**
@kishida
kishida / Vagrantfile
Created May 3, 2016 10:51
Vagrantとりあえずふたつ起動
Vagrant.configure("2") do |conf|
conf.vm.box = "bento/centos-7.1"
conf.vm.define "console", primary: true do |host|
host.vm.network "private_network", ip: "192.168.34.21"
end
conf.vm.define "target" do |host|
host.vm.network "private_network", ip: "192.168.34.22"
end
@kishida
kishida / Vagrantfile
Created May 3, 2016 10:52
Vagrant、Shellでansible
Vagrant.configure("2") do |conf|
conf.vm.box = "bento/centos-7.1"
conf.vm.define "console", primary: true do |host|
host.vm.network "private_network", ip: "192.168.34.21"
host.vm.provision "shell", inline: <<-SHELL
yum -y install epel-release
yum -y install ansible
SHELL
end