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const std = @import("std");
const Random = std.Random;
const time = std.time;
const bubble = @import("sort/bubble.zig");
const selection = @import("sort/selection.zig");
const insertion = @import("sort/insertion.zig");
const shell = @import("sort/shell.zig");
const merge = @import("sort/merge.zig");
const testing = std.testing;
const Allocator = std.mem.Allocator;
fn benchmark(comptime T: type, comptime sort_fn: fn (type, []T) void, n: usize, runs: usize) !u64 {
var prng = Random.DefaultPrng.init(0);
var random = prng.random();
var allocator = testing.allocator;
var total_time: u64 = 0;
for (0..runs) |_| {
const list = try allocator.alloc(T, n);
defer allocator.free(list);
for (list) |*item| {
item.* = random.int(T);
}
const start = time.milliTimestamp();
sort_fn(T, list);
const end = time.milliTimestamp();
total_time += @intCast(end - start);
}
return total_time / runs;
}
fn benchmark_merge(comptime T: type, n: usize, runs: usize) !u64 {
var prng = Random.DefaultPrng.init(0);
var random = prng.random();
var total_time: u64 = 0;
var allocator = testing.allocator;
for (0..runs) |_| {
const list = try allocator.alloc(T, n);
defer allocator.free(list);
for (list) |*item| {
item.* = random.int(T);
}
const start = time.milliTimestamp();
try merge.sort(T, list, &allocator);
const end = time.milliTimestamp();
total_time += @intCast(end - start);
}
return total_time / runs;
}
fn run_bench(comptime T: type, comptime sort_fn: fn (type, []T) void, name: []const u8) !void {
const runs = 10;
const sizes = [_]usize{ 100, 1000, 10000 };
std.debug.print("\n{s} Benchmark:\n", .{name});
for (sizes) |size| {
const avg_time = try benchmark(T, sort_fn, size, runs);
std.debug.print("Average time for N={d}: {d} ms\n", .{ size, avg_time });
}
}
fn run_bench_merge(comptime T: type, name: []const u8) !void {
const runs = 10;
const sizes = [_]usize{ 100, 1000, 10000 };
std.debug.print("\n{s} Benchmark:\n", .{name});
for (sizes) |size| {
const avg_time = try benchmark_merge(T, size, runs);
std.debug.print("Average time for N={d}: {d} ms\n", .{ size, avg_time });
}
}
test "sorting benchmarks" {
try run_bench(i64, bubble.sort, "Bubble Sort");
try run_bench(i64, selection.sort, "Selection Sort");
try run_bench(i64, insertion.sort, "Insertion Sort");
try run_bench(i64, shell.sort, "Shell Sort");
try run_bench_merge(i64, "Merge Sort");
}
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