Advent-Of-Code-2022/Advent of Code 2022 Day 5/src/main.java

import java.io.IOException;
import java.io.RandomAccessFile;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.Queue;
import java.util.Stack;

public class main {
	static ArrayList<Stack<Character>> supplyStacksPart1;
	static ArrayList<Stack<Character>> supplyStacksPart2;
	
	
	public static void main(String[] args) {
		supplyStacksPart1 = new ArrayList<Stack<Character>>(9);		
		supplyStacksPart2 = new ArrayList<Stack<Character>>(9);
		for (int i = 0; i < 9; i++) {
			supplyStacksPart1.add(new Stack<Character>());
			supplyStacksPart2.add(new Stack<Character>());
		}
		populateArrayListOfStacks(supplyStacksPart1);
		populateArrayListOfStacks(supplyStacksPart2);
		
		int numberOfCratesToMove = 0,stackToBeMovedFrom = 0, stackToMoveTo = 0;
		int line = 0;
		int offset = 0;
		
		Stack<Character> temporalHoldingOfCrates = new Stack<Character>();
		
		try {
			RandomAccessFile file = new RandomAccessFile("input.txt", "r");
			String str;

			while ((str = file.readLine()) != null) {
				line++;
				
				if (line >= 11) {
					if (str.charAt(7) != ' ') {
						numberOfCratesToMove = Integer.valueOf(str.substring(5,6));
						offset = 0;
					}
					else {
						numberOfCratesToMove = Integer.valueOf(str.substring(5,7));
						offset = 1;
					}
						
					stackToBeMovedFrom = Integer.valueOf(str.substring(12+offset,13+offset));
					stackToMoveTo = Integer.valueOf(str.substring(17+offset));
					for (int i = 0; i < numberOfCratesToMove; i++) {
						//Part 1
						if (!supplyStacksPart1.get(stackToBeMovedFrom-1).empty()) {
							supplyStacksPart1.get(stackToMoveTo-1).push(supplyStacksPart1.get(stackToBeMovedFrom-1).pop());
						}
						
						//Part 2
						if (!supplyStacksPart2.get(stackToBeMovedFrom-1).empty()) {
							temporalHoldingOfCrates.push(supplyStacksPart2.get(stackToBeMovedFrom-1).pop()); 
						}	
					}
					for (int i = 0; i < temporalHoldingOfCrates.size(); i++) {
						supplyStacksPart2.get(stackToMoveTo-1).push(temporalHoldingOfCrates.pop());
					}
					
					for (int i = 0; i < 9; i++) {
						if (!supplyStacksPart2.get(i).empty())
							System.out.print(supplyStacksPart2.get(i).peek());
						else
							System.out.print(" ");
					}
					System.out.println();
				}
			}
			
			
			
			System.out.print("Part 1: ");
			for (int i = 0; i < 9; i++) {
				if (!supplyStacksPart1.get(i).empty())
					System.out.print(supplyStacksPart1.get(i).peek());
			}
			
			System.out.println("");
			
			
			System.out.print("Part 2: ");
			for (int i = 0; i < 9; i++) {
				if (!supplyStacksPart2.get(i).empty())
					System.out.print(supplyStacksPart2.get(i).peek());
			}
			
			
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	
	public static void populateArrayListOfStacks(ArrayList<Stack<Character>> arrayListOfStack) {
		arrayListOfStack.get(0).push('Z');
		arrayListOfStack.get(0).push('N');
		
		arrayListOfStack.get(1).push('M');
		arrayListOfStack.get(1).push('C');
		arrayListOfStack.get(1).push('D');
		
		arrayListOfStack.get(2).push('P');
		/*
		// Stack 1
		arrayListOfStack.get(0).push('W');
		arrayListOfStack.get(0).push('D');
		arrayListOfStack.get(0).push('G');
		arrayListOfStack.get(0).push('B');
		arrayListOfStack.get(0).push('H');
		arrayListOfStack.get(0).push('R');
		arrayListOfStack.get(0).push('V');
		
		// Stack 2
		arrayListOfStack.get(1).push('J');
		arrayListOfStack.get(1).push('N');
		arrayListOfStack.get(1).push('G');
		arrayListOfStack.get(1).push('C');
		arrayListOfStack.get(1).push('R');
		arrayListOfStack.get(1).push('F');
		
		// Stack 3
		arrayListOfStack.get(2).push('L');
		arrayListOfStack.get(2).push('S');
		arrayListOfStack.get(2).push('F');
		arrayListOfStack.get(2).push('H');
		arrayListOfStack.get(2).push('D');
		arrayListOfStack.get(2).push('N');
		arrayListOfStack.get(2).push('J');
		
		// Stack 4
		arrayListOfStack.get(3).push('J');
		arrayListOfStack.get(3).push('D');
		arrayListOfStack.get(3).push('S');
		arrayListOfStack.get(3).push('V');
		
		// Stack 5
		arrayListOfStack.get(4).push('S');
		arrayListOfStack.get(4).push('H');
		arrayListOfStack.get(4).push('D');
		arrayListOfStack.get(4).push('R');
		arrayListOfStack.get(4).push('Q');
		arrayListOfStack.get(4).push('W');
		arrayListOfStack.get(4).push('N');
		arrayListOfStack.get(4).push('V');
		
		// Stack 6
		arrayListOfStack.get(5).push('P');
		arrayListOfStack.get(5).push('G');
		arrayListOfStack.get(5).push('H');
		arrayListOfStack.get(5).push('C');
		arrayListOfStack.get(5).push('M');
		
		// Stack 7
		arrayListOfStack.get(6).push('F');
		arrayListOfStack.get(6).push('J');
		arrayListOfStack.get(6).push('B');
		arrayListOfStack.get(6).push('G');
		arrayListOfStack.get(6).push('L');
		arrayListOfStack.get(6).push('Z');
		arrayListOfStack.get(6).push('H');
		arrayListOfStack.get(6).push('C');
		
		// Stack 8
		arrayListOfStack.get(7).push('S');
		arrayListOfStack.get(7).push('J');
		arrayListOfStack.get(7).push('R');
		
		// Stack 9
		arrayListOfStack.get(8).push('L');
		arrayListOfStack.get(8).push('G');
		arrayListOfStack.get(8).push('S');
		arrayListOfStack.get(8).push('R');
		arrayListOfStack.get(8).push('B');
		arrayListOfStack.get(8).push('N');
		arrayListOfStack.get(8).push('V');
		arrayListOfStack.get(8).push('M');
		*/
	}

}