code: update zig 0.14.1 for the chapter of array_and_linkedlist and computational_complexity (#1787)

* update zig array list chapter

* update not need change codes.

* fix some pr issues and update time space chapter
This commit is contained in:
MetaSky
2025-08-06 02:33:00 +08:00
committed by GitHub
parent 0918fd06f2
commit 803c0e09c7
22 changed files with 836 additions and 627 deletions

View File

@ -1,6 +1,6 @@
// File: iteration.zig
// Created Time: 2023-09-27
// Author: QiLOL (pikaqqpika@gmail.com)
// Author: QiLOL (pikaqqpika@gmail.com), CreatorMetaSky (creator_meta_sky@163.com)
const std = @import("std");
const Allocator = std.mem.Allocator;
@ -9,20 +9,19 @@ const Allocator = std.mem.Allocator;
fn forLoop(n: usize) i32 {
var res: i32 = 0;
// 循环求和 1, 2, ..., n-1, n
for (1..n+1) |i| {
res = res + @as(i32, @intCast(i));
for (1..n + 1) |i| {
res += @intCast(i);
}
return res;
}
}
// while 循环
fn whileLoop(n: i32) i32 {
var res: i32 = 0;
var i: i32 = 1; // 初始化条件变量
// 循环求和 1, 2, ..., n-1, n
while (i <= n) {
while (i <= n) : (i += 1) {
res += @intCast(i);
i += 1;
}
return res;
}
@ -32,11 +31,12 @@ fn whileLoopII(n: i32) i32 {
var res: i32 = 0;
var i: i32 = 1; // 初始化条件变量
// 循环求和 1, 4, 10, ...
while (i <= n) {
res += @intCast(i);
while (i <= n) : ({
// 更新条件变量
i += 1;
i *= 2;
}) {
res += @intCast(i);
}
return res;
}
@ -47,31 +47,45 @@ fn nestedForLoop(allocator: Allocator, n: usize) ![]const u8 {
defer res.deinit();
var buffer: [20]u8 = undefined;
// 循环 i = 1, 2, ..., n-1, n
for (1..n+1) |i| {
for (1..n + 1) |i| {
// 循环 j = 1, 2, ..., n-1, n
for (1..n+1) |j| {
var _str = try std.fmt.bufPrint(&buffer, "({d}, {d}), ", .{i, j});
try res.appendSlice(_str);
for (1..n + 1) |j| {
const str = try std.fmt.bufPrint(&buffer, "({d}, {d}), ", .{ i, j });
try res.appendSlice(str);
}
}
return res.toOwnedSlice();
}
// Driver Code
pub fn main() !void {
pub fn run() !void {
var gpa = std.heap.DebugAllocator(.{}){};
defer _ = gpa.deinit();
const allocator = gpa.allocator();
const n: i32 = 5;
var res: i32 = 0;
res = forLoop(n);
std.debug.print("\nfor 循环的求和结果 res = {}\n", .{res});
std.debug.print("for 循环的求和结果 res = {}\n", .{res});
res = whileLoop(n);
std.debug.print("\nwhile 循环的求和结果 res = {}\n", .{res});
std.debug.print("while 循环的求和结果 res = {}\n", .{res});
res = whileLoopII(n);
std.debug.print("\nwhile 循环(两次更新)求和结果 res = {}\n", .{res});
std.debug.print("while 循环(两次更新)求和结果 res = {}\n", .{res});
const allocator = std.heap.page_allocator;
const resStr = try nestedForLoop(allocator, n);
std.debug.print("\n双层 for 循环的遍历结果 {s}\n", .{resStr});
std.debug.print("双层 for 循环的遍历结果 {s}\n", .{resStr});
allocator.free(resStr);
std.debug.print("\n", .{});
}
pub fn main() !void {
try run();
}
test "interation" {
try run();
}