Jin Kwon onacit

Just a software developer.

onacit / docker.gradle.sh

Last active November 10, 2021 12:38

Using docker for building a gradle project with alternative JDKs

	#!/bin/sh
	# https://gist.github.com/onacit/036c93befff929a1f43b7603aa0b65bb
	if [ $# -lt 3 ]; then
	echo "Usage: $0 <tag> <tasks...>, e.g. $0 6.0.1-jdk11 -Pprofile=local clean build"
	echo "See https://hub.docker.com/_/gradle for available tags"
	exit 1
	fi
	tag="$1"
	shift
	name=$(basename "$PWD")

onacit / docker.maven.sh

Last active December 16, 2021 03:12

Using docker for building a maven project with alternative JDKs.

	#!/bin/sh
	# https://gist.github.com/onacit/9f79215aaf6bd8d59e78ed6a38b93889
	# https://stackoverflow.com/questions/3545292/how-to-get-maven-project-version-to-the-bash-command-line
	if [ $# -lt 2 ]; then
	echo "Usage: $0 <tag> <phases...>, e.g. $0 3-jdk-11-openj9 clean install"
	echo "See https://hub.docker.com/_/maven for available tags"
	exit 1
	fi
	groupId=$(mvn help:evaluate -Dexpression=project.groupId \| grep -v '\[')
	artifactId=$(mvn help:evaluate -Dexpression=project.artifactId \| grep -v '\[')

onacit / SelectionSort.java

Last active October 24, 2021 06:21

Selection sort in Java

	package p_0dd925d3768fcd4f79494ae32905dc1b;

	import java.util.Comparator;
	import java.util.List;

	import static java.util.Objects.requireNonNull;

	/**
	* A class implements <a href="https://en.wikipedia.org/wiki/Selection_sort">Selection sort</a>.
	*

onacit / MontyHallProblem.java

Last active November 9, 2019 14:21

Run Monty Hall Problem with Random

	import java.security.*;
	import java.util.*;
	import java.util.concurrent.atomic.*;
	public class MontyHallProblem {
	//private static final long COUNT = 1048576L;
	private static final long COUNT = 30000L;
	static { assert COUNT > 0L; }
	private static final int DOORS = 3;
	static { assert DOORS > 0; }
	public static void main(final String... args) throws Exception {

onacit / ChronoUnitMatrix.java

Last active December 2, 2018 08:51

Prints information from java.time.temporal.ChronoUnit.

	import java.time.temporal.*;

	public class ChronoUnitMatrix {

	public static void main(final String... args) {
	System.out.printf("%-10s%-6s%-6s%s\n", "name", "time", "date",
	"duration (estimated) (seconds)");
	System.out.printf("%-10s%-6s%-6s%s\n", "---------", "-----", "-----",
	"---------------------------------------------------------------");
	for (final ChronoUnit value : ChronoUnit.values()) {

onacit / Fibonacci.java

Last active November 30, 2018 09:18

Get fibonacci number of given nth term.

	import java.math.BigInteger;

	public class Fibonacci {

	public static void main(final String... args) {
	final int n = Integer.parseInt(args[0]);
	if (n < 0) {
	throw new IllegalArgumentException("n(" + n + ") is negative");
	}
	if (n == 0) {

onacit / main.c

Last active June 18, 2018 06:58

Main function of C

	#include <assert.h>
	#include <stdio.h>

	/*
	* 5.1.2.2.1 Program startup
	* N1548
	*/
	int main(int argc, char *argv[]) {
	// The value of argc shall be nonnegative.
	assert(argc >= 0);