add ex53 slices2

build.zig

@@ -272,6 +272,10 @@ const exercises = [_]Exercise{
         .main_file = "52_slices.zig",
         .output = "Hand1: A 4 K 8 Hand2: 5 2 Q J",
     },
+    .{
+        .main_file = "53_slices2.zig",
+        .output = "'all your base are belong to us.' 'for great justice.'",
+    },
 };
 
 /// Check the zig version to make sure it can compile the examples properly.

exercises/53_slices2.zig

@@ -0,0 +1,35 @@
+//
+// You are perhaps tempted to try slices on strings? They're arrays of
+// u8 characters after all, right? Slices on strings work great.
+// There's just one catch: don't forget that Zig string literals are
+// immutable (const) values. So we need to change the type of slice
+// from:
+//
+//     var foo: []u8 = "foobar"[0..3];
+//
+// to:
+//   
+//     var foo: []const u8 = "foobar"[0..3];
+//
+// See if you can fix this Zero Wing-inspired phrase descrambler:
+const std = @import("std");
+
+pub fn main() void {
+    const scrambled = "great base for all your justice are belong to us";
+
+    const base1: []u8 = scrambled[15..23];
+    const base2: []u8 = scrambled[6..10];
+    const base3: []u8 = scrambled[32..];
+    printPhrase(base1, base2, base3);
+
+    const justice1: []u8 = scrambled[11..14];
+    const justice2: []u8 = scrambled[0..5];
+    const justice3: []u8 = scrambled[24..31];
+    printPhrase(justice1, justice2, justice3);
+
+    std.debug.print("\n", .{});
+}
+
+fn printPhrase(part1: []u8, part2: []u8, part3: []u8) void {
+    std.debug.print("'{s} {s} {s}.' ", .{part1, part2, part3});
+}

patches/patches/53_slices2.patch

@@ -0,0 +1,20 @@
+20,22c20,22
+<     const base1: []u8 = scrambled[15..23];
+<     const base2: []u8 = scrambled[6..10];
+<     const base3: []u8 = scrambled[32..];
+---
+>     const base1: []const u8 = scrambled[15..23];
+>     const base2: []const u8 = scrambled[6..10];
+>     const base3: []const u8 = scrambled[32..];
+25,27c25,27
+<     const justice1: []u8 = scrambled[11..14];
+<     const justice2: []u8 = scrambled[0..5];
+<     const justice3: []u8 = scrambled[24..31];
+---
+>     const justice1: []const u8 = scrambled[11..14];
+>     const justice2: []const u8 = scrambled[0..5];
+>     const justice3: []const u8 = scrambled[24..31];
+33c33
+< fn printPhrase(part1: []u8, part2: []u8, part3: []u8) void {
+---
+> fn printPhrase(part1: []const u8, part2: []const u8, part3: []const u8) void {