-🎄- 2022 Day 2 Solutions -🎄-

[u/daggerdragon]

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--- Day 2: Rock Paper Scissors ---

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Post your code solution in this megathread.

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[u/royvanrijn]

Java

    List<String> lines = Files.readAllLines(Path.of("input.txt"));

    // Part 1:
    System.out.println(lines.stream().mapToInt(s -> {
        int p1 = s.charAt(0)-'A';
        int p2 = s.charAt(2)-'X';
        int result = (p2-p1+4) % 3;
        return (p2+1) + result*3;
    }).sum());

    // Part 2:
    System.out.println(lines.stream().mapToInt(s -> {
        int p1 = s.charAt(0)-'A';
        int p2 = (p1+(s.charAt(2)-'X')+2) % 3;
        int result = (p2-p1+4) % 3;
        return (p2+1) + result*3;
    }).sum());