1 files changed, 38 insertions, 0 deletions
diff --git a/challenge-308/deadmarshal/zig/ch2/src/main.zig b/challenge-308/deadmarshal/zig/ch2/src/main.zig
new file mode 100644
index 0000000000..b13741cdf2
--- /dev/null
+++ b/challenge-308/deadmarshal/zig/ch2/src/main.zig
@@ -0,0 +1,38 @@
+const std = @import("std");
+
+fn decodeXor(
+    allocator: std.mem.Allocator,
+    arr: []const u32,
+    first: u32,
+) ![]u32 {
+    const res = try allocator.alloc(u32, arr.len + 1);
+    errdefer allocator.free(res);
+    res[0] = first;
+    for (0..arr.len) |i| {
+        res[i + 1] = res[i] ^ arr[i];
+    }
+    return res;
+}
+
+pub fn main() !void {
+    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
+    defer {
+        std.debug.assert(gpa.detectLeaks() == false);
+        std.debug.assert(gpa.deinit() == .ok);
+    }
+    const allocator = gpa.allocator();
+
+    const a1: []const u32 = &.{ 1, 2, 3 };
+    const a2: []const u32 = &.{ 6, 2, 7, 3 };
+
+    const res1 = try decodeXor(allocator, a1, 1);
+    const res2 = try decodeXor(allocator, a2, 4);
+
+    std.debug.print("{any}\n", .{res1});
+    std.debug.print("{any}\n", .{res2});
+
+    defer {
+        allocator.free(res1);
+        allocator.free(res2);
+    }
+}