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AdventOfCode/day_02/java/Part1.java
2022-12-08 23:10:21 -06:00

77 lines
No EOL
1.4 KiB
Java

package day_02.java;
import java.io.FileNotFoundException;
import java.util.*;
import jlib.FileSystem;
public class Part1 {
public static void main(String[] args) {
if (args.length < 1) {
System.out.println("Not enough args");
return;
};
Scanner s;
try {
s = FileSystem.readFile(args[0]);
} catch (FileNotFoundException e) {
System.out.println("Can't find that file");
return;
}
Integer points = 0;
while (s.hasNextLine()) {
String l = s.nextLine();
Integer round = Part1.determineScore(
l.charAt(l.length() - 1),
l.charAt(0)
);
points = points + round;
}
System.out.println(points + " points");
}
/**
* Determines if we win or the opponent wins in a game of Rock Paper Scissors
*
* A = Rock
* B = Paper
* C = Scissors
*
* X = Rock
* Y = Paper
* Z = Scissors
*
* Paper
* / ^
* / \
* v \
* Rock --> Scissors
*
*/
public static boolean isWin(Character me, Character opponent) {
if ( me.equals(opponent) ) {
return false;
}
else if (opponent.equals('A')) {
return me.equals('Y');
} else if (opponent.equals('B')) {
return me.equals('Z');
} else {
return me.equals('X');
}
}
public static Integer determineScore(Character me, Character opponent) {
Integer choice = (int)me - 87;
if (choice == ((int)opponent - 64)) {
return 3 + choice;
}
if (Part1.isWin(me, opponent)) {
return 6 + choice;
}
return choice;
}
}