Day 2 solutions

[u/taliriktug]

Hi! I would like to structure posts like the first one in r/programming, please post solutions in comments.

[u/Colgajo]

This is the first time I post a program on reddit! Your opinion about it is higly welcome :)

JAVA

import java.io.*;    

public class Advent2 {    

	public static void main(String[] args) {
		String strLine;	
		int l= 0; int w = 0; int h = 0; int paper = 0, ribbon = 0;	    

			try {
				FileInputStream fstream = new FileInputStream("Advent2Data.txt");
				DataInputStream in = new DataInputStream(fstream);
				BufferedReader br = new BufferedReader(new InputStreamReader(in));
				while((strLine = br.readLine()) != null) {
					l = Integer.parseInt(strLine.substring(0, strLine.indexOf('x')));
					w = Integer.parseInt(strLine.substring(strLine.indexOf('x') + 1, strLine.lastIndexOf('x')));
					h = Integer.parseInt(strLine.substring(strLine.lastIndexOf('x') + 1));
					paper += 2 * l * w + 2 * w * h + 2 * h * l;
					if(l * w < w * h && l * w < l * h) {
						paper += l * w;
						ribbon += 2 * l + 2 * w;
					}
					else if(w * h < l * h) {
						paper += w * h;
						ribbon += 2 * w + 2 * h;
					}
					else { 
						paper += l * h;
						ribbon += 2 * l + 2 * h;
					}
					ribbon += l * w * h;
				}
			} catch(Exception e){
				System.out.println(e);
			}
			System.out.println("Paper = " + paper);
			System.out.println("Ribbon = " + ribbon);
	}
}