Solve day02
Created by voroskoi on December 3, 2022
VTRQE7TUTF5CLFUPCFURXGT3SUHNNVABFDLI4LF76RIUW2QV5NUQC Dependencies
In channels
main
Change contents
Replacement in src/main.zig at line 5 [3.50]
Insertion in src/main.zig at line 9 [3.50]
Insertion in src/main.zig at line 14 [3.50]
File addition: day02.txt
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ZC YB ZB YC YB ZC YA ZB YB YB YB YC ZA YA XC XA YC YC XB YC YA YB YC YB YA XB YB YB ZC YC YA XB ZA ZB YB YB YB XB YB YC YB YC XA YB YB YA ZC XA XA XC XB YC ZB YA ZC YB YB YC XB ZC YA XA YC YA ZB YB ZC YA ZA YA YB YA XB ZB XB ZB YB YA YC YB YB ZB YA YC YC YA XB YA XC XA ZA YB ZB YB YB YC YA XB ZA XC YC ZA XB ZC XB YB YA YB ZB XB YB YA ZC YB YB YC YB YA XB YB YB ZB YA YA ZB YB YA YA ZA ZA YB YA YB ZB YB YA ZB YB YB XA XB YB YC ZC XA YB ZB YC YB YB YB YA XA YB YC ZB YB YB YC ZB YB ZB YB YB YC YB YB YC YC YA XC YA YB YB YB YB YA YA YC XB YC ZA XB XC ZC YB YB YB XB ZC YB ZB YB YB YB YC ZC YC YA YB YB ZB YC ZB YB YC YB YB ZB ZB YC ZB YB YB YB YB YA YC XA ZA YB YC XB ZB YC YB YA YB YB YB YA ZA ZB YB YB ZA ZC YC YC YC ZB YC YC XA ZB ZB XB XC YB YA ZB ZB YB YB ZB YB YB XB YB YA ZA ZA YB ZB YA YB YA ZB YB YA XB ZC YA ZC YC YB YC XC YA XA ZC ZB YB YB YB YB YB YB YB YB YB YB YB YB YC XC YC YC YB YB YC YC YA XB XC XC ZB YA YA ZB YC YC ZB YA YC YB YA YB YA YC ZC YA YA ZB YC YB YB YB YB YB ZC ZB YB 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ZA YB YA YB YB YB YB YB YA YC YC YB ZB YB YB ZA ZA XC ZB YB YA XC YA YB YA YB YB ZC YC ZB YA YB YC ZC ZA XA XC ZA XA ZB YB YC ZC YC ZA XA XB ZB YB YA XB YB ZC YC XB YC ZB YC ZB YB ZB YC YA ZB YB YA XA ZA XC YB YB YC ZB ZC XB YC YC YA ZC ZB ZB YB ZB YA ZA YA YA XB ZC ZC XB YA XC XA YB YB YB YA ZB YC XB YA ZB ZB ZC YB YC XC XC YC YC ZC XB YC YC YB ZB YA YB ZA XB YA ZC YB YC ZB YA XC ZB ZB YB YB YB YB YC ZA ZC YA ZB YC XC XA XA YB ZC YC XC XC YC XB YC XA YC ZB YB ZB YA XB YA ZA YC XA XB XC XC ZC XA YA ZB YA YFile addition: day02.zig
[3.15]const std = @import("std");const PATH = "import/day02.txt";pub fn first(allocator: std.mem.Allocator) !usize {_ = allocator;var sum: usize = 0;var lines = std.mem.tokenize(u8, @embedFile(PATH), "\n");while (lines.next()) |line| {var words = std.mem.tokenize(u8, line, " ");const opp: usize = switch (words.next().?[0]) {'A' => 1, // rock'B' => 2, // paper'C' => 3, // scissorelse => unreachable,};const me: usize = switch (words.next().?[0]) {'X' => 1, // rock'Y' => 2, // paper'Z' => 3, // scissorelse => unreachable,};var outcome: usize = undefined;switch (me) {1 => {outcome = if (opp == 1) 3 else if (opp == 2) 0 else 6;},2 => {outcome = if (opp == 1) 6 else if (opp == 2) 3 else 0;},3 => {outcome = if (opp == 1) 0 else if (opp == 2) 6 else 3;},else => unreachable,}sum += me + outcome;}return sum;}pub fn second(allocator: std.mem.Allocator) !usize {_ = allocator;var sum: usize = 0;var lines = std.mem.tokenize(u8, @embedFile(PATH), "\n");while (lines.next()) |line| {var words = std.mem.tokenize(u8, line, " ");const opp: usize = switch (words.next().?[0]) {'A' => 1, // rock'B' => 2, // paper'C' => 3, // scissorelse => unreachable,};const outcome: usize = switch (words.next().?[0]) {'X' => 0, // lose'Y' => 3, // draw'Z' => 6, // winelse => unreachable,};var me: usize = undefined;switch (outcome) {0 => { // loseme = if (opp == 1) 3 else if (opp == 2) 1 else 2;},3 => { // drawme = if (opp == 1) 1 else if (opp == 2) 2 else 3;},6 => { // winme = if (opp == 1) 2 else if (opp == 2) 3 else 1;},else => unreachable,}sum += me + outcome;}return sum;}test "day02a" {try std.testing.expectEqual(@as(usize, 13052), try first(std.testing.allocator));}test "day02b" {try std.testing.expectEqual(@as(usize, 13693), try second(std.testing.allocator));}const test_input =\\A Y\\B X\\C Z;