All gists from kristofer

kristofer / Hmm-Phi3andCards.md

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So I asked Phi3...

To generate some code like we talked about with Deal.java

Read this code.

To create a Java program that models a deck of cards, we'll define two main components: Card (using an enum to represent suits and ranks) and Hand (to hold a collection of cards). We will also implement a Deck class that initializes with all possible combinations of these cards.

Step 1: Define the Card Enum

First, we define an enum for both the suit and rank to represent each card uniquely.

kristofer / SpaceInvadersGame.java

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1	import javax.swing.*;
2	import java.awt.*;
3	import java.awt.event.ActionEvent;
4	import java.awt.event.ActionListener;
5	import java.awt.event.KeyEvent;
6	import java.awt.event.KeyListener;
7	import java.util.ArrayList;
8	import java.util.List;
9	import java.util.Random;

kristofer / SortingExamples.java

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1	import java.util.Arrays;
2	import java.util.Scanner;
3
4	public class SortingExamples {
5	public static void main(String[] args) {
6	Scanner input = new Scanner(System.in);
7
8	// Input array from the user
9	System.out.print("Enter the number of elements in the array: ");
10	int n = input.nextInt();

kristofer / UrlShortener.java

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1	import java.security.MessageDigest;
2	import java.security.NoSuchAlgorithmException;
3	import java.util.HashMap;
4	import java.util.Map;
5	import java.util.Random;
6
7	public class UrlShortener {
8	private Map<String, String> urlMap = new HashMap<>();
9	private static final String BASE_URL = "http://short.url/";

kristofer / WeatherApp.java

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1	import java.io.BufferedReader;
2	import java.io.IOException;
3	import java.io.InputStreamReader;
4	import java.net.HttpURLConnection;
5	import java.net.URL;
6
7	// go to https://openweathermap.org to see
8
9
10	public class WeatherApp {

kristofer / NotesApp.java

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Last active 1718984355

1	import java.io.*;
2	import java.util.ArrayList;
3	import java.util.Scanner;
4
5	class Note {
6	private String title;
7	private String content;
8
9	public Note(String title, String content) {
10	this.title = title;

kristofer / NQueenProblem.java

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1	// Java program to solve N Queen Problem using backtracking
2
3	public class NQueenProblem {
4	final int N = 4;
5
6	// A utility function to print solution
7	void printSolution(int board[][])
8	{
9	for (int i = 0; i < N; i++) {
10	for (int j = 0; j < N; j++) {

kristofer / Minesweeper.java

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1	import java.util.Random;
2	import java.util.Scanner;
3
4	public class Minesweeper {
5	private static final int SIZE = 10;
6	private static final int MINES = 15;
7
8	private char[][] board;
9	private boolean[][] mines;
10	private boolean[][] revealed;

kristofer / IntersectionOfTwoArrays.java

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Last active 1718984169

1	import java.util.*;
2
3	public class IntersectionOfTwoArrays {
4	public static void main(String args[])
5	{
6	Scanner sc=new Scanner(System.in);
7	HashSet<Integer>s=new HashSet<Integer>();
8	System.out.println("Enter the no. of elements in array a");
9	int n1=sc.nextInt();
10	System.out.println("Enter the no. of elements in array b");

kristofer / InterfaceDemo.java

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1	interface Shape {
2	double area();
3	double perimeter();
4	}
5
6	class Circle implements Shape {
7	private double radius;
8
9	public Circle(double radius) {
10	this.radius = radius;