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: time_complexity.zig
// Created Time: 2022-12-28
// Author: codingonion (coderonion@gmail.com)
// Author: codingonion (coderonion@gmail.com), CreatorMetaSky (creator_meta_sky@163.com)
const std = @import("std");
@ -10,7 +10,7 @@ fn constant(n: i32) i32 {
var count: i32 = 0;
const size: i32 = 100_000;
var i: i32 = 0;
while(i<size) : (i += 1) {
while (i < size) : (i += 1) {
count += 1;
}
return count;
@ -52,7 +52,7 @@ fn quadratic(n: i32) i32 {
// 平方阶(冒泡排序)
fn bubbleSort(nums: []i32) i32 {
var count: i32 = 0; // 计数器
var count: i32 = 0; // 计数器
// 外循环:未排序区间为 [0, i]
var i: i32 = @as(i32, @intCast(nums.len)) - 1;
while (i > 0) : (i -= 1) {
@ -61,10 +61,10 @@ fn bubbleSort(nums: []i32) i32 {
while (j < i) : (j += 1) {
if (nums[j] > nums[j + 1]) {
// 交换 nums[j] 与 nums[j + 1]
var tmp = nums[j];
const tmp = nums[j];
nums[j] = nums[j + 1];
nums[j + 1] = tmp;
count += 3; // 元素交换包含 3 个单元操作
count += 3; // 元素交换包含 3 个单元操作
}
}
}
@ -97,11 +97,9 @@ fn expRecur(n: i32) i32 {
// 对数阶(循环实现)
fn logarithmic(n: i32) i32 {
var count: i32 = 0;
var n_var = n;
while (n_var > 1)
{
n_var = n_var / 2;
count +=1;
var n_var: i32 = n;
while (n_var > 1) : (n_var = @divTrunc(n_var, 2)) {
count += 1;
}
return count;
}
@ -109,13 +107,13 @@ fn logarithmic(n: i32) i32 {
// 对数阶(递归实现)
fn logRecur(n: i32) i32 {
if (n <= 1) return 0;
return logRecur(n / 2) + 1;
return logRecur(@divTrunc(n, 2)) + 1;
}
// 线性对数阶
fn linearLogRecur(n: i32) i32 {
if (n <= 1) return 1;
var count: i32 = linearLogRecur(n / 2) + linearLogRecur(n / 2);
var count: i32 = linearLogRecur(@divTrunc(n, 2)) + linearLogRecur(@divTrunc(n, 2));
var i: i32 = 0;
while (i < n) : (i += 1) {
count += 1;
@ -136,7 +134,7 @@ fn factorialRecur(n: i32) i32 {
}
// Driver Code
pub fn main() !void {
pub fn run() void {
// 可以修改 n 运行,体会一下各种复杂度的操作数量变化趋势
const n: i32 = 8;
std.debug.print("输入数据大小 n = {}\n", .{n});
@ -146,14 +144,14 @@ pub fn main() !void {
count = linear(n);
std.debug.print("线性阶的操作数量 = {}\n", .{count});
var nums = [_]i32{0}**n;
var nums = [_]i32{0} ** n;
count = arrayTraversal(&nums);
std.debug.print("线性阶(遍历数组)的操作数量 = {}\n", .{count});
count = quadratic(n);
std.debug.print("平方阶的操作数量 = {}\n", .{count});
for (&nums, 0..) |*num, i| {
num.* = n - @as(i32, @intCast(i)); // [n,n-1,...,2,1]
num.* = n - @as(i32, @intCast(i)); // [n,n-1,...,2,1]
}
count = bubbleSort(&nums);
std.debug.print("平方阶(冒泡排序)的操作数量 = {}\n", .{count});
@ -174,6 +172,13 @@ pub fn main() !void {
count = factorialRecur(n);
std.debug.print("阶乘阶(递归实现)的操作数量 = {}\n", .{count});
_ = try std.io.getStdIn().reader().readByte();
std.debug.print("\n", .{});
}
pub fn main() !void {
run();
}
test "time_complexity" {
run();
}