day01: merge silver/gold solutions

src/day01.zig

@@ -1,16 +1,17 @@
 const std = @import("std");
 const util = @import("util.zig");
 
+const numbers = [_][]const u8{ "zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine" };
+
 pub fn main() !void {
     const input = @embedFile("data/day01.txt");
-    const sln = try solve(input);
-    std.debug.print("Solution: {d}", .{sln});
+    std.debug.print("{d}\n", .{try solve(input, &[_][]u8{})});
+    std.debug.print("{d}\n", .{try solve(input, &numbers)});
 }
 
-const numbers = [_][]const u8{ "zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine" };
 const zero = @as(u8, '0');
 
-fn solve(input: []const u8) !u32 {
+fn solve(input: []const u8, words: []const []const u8) !u32 {
     var sum: u32 = 0;
 
     var it = std.mem.splitAny(u8, input, "\n");
@@ -27,9 +28,9 @@ fn solve(input: []const u8) !u32 {
             if (line[offset] >= '0' and line[offset] <= '9') {
                 n = line[offset];
             } else {
-                inline for (numbers, 0..) |word, value| {
+                for (words, 0..) |word, value| {
                     if (std.mem.startsWith(u8, line[offset..], word)) {
-                        n = value + zero;
+                        n = @as(u8, @intCast(value)) + zero;
                         break;
                     }
                 }
@@ -49,7 +50,17 @@ fn solve(input: []const u8) !u32 {
     return sum;
 }
 
-test "sample" {
+test "silver" {
+    const input =
+        \\1abc2
+        \\pqr3stu8vwx
+        \\a1b2c3d4e5f
+        \\treb7uchet
+    ;
+    try std.testing.expectEqual(@as(u32, 142), try solve(input, &[_][]u8{}));
+}
+
+test "gold" {
     const input =
         \\two1nine
         \\eightwothree
@@ -59,6 +70,5 @@ test "sample" {
         \\zoneight234
         \\7pqrstsixteen
     ;
-    const sln = try solve(input);
-    try std.testing.expectEqual(@as(u32, 281), sln);
+    try std.testing.expectEqual(@as(u32, 281), try solve(input, &numbers));
 }