hello-algo/codes/zig/chapter_stack_and_queue/queue.zig
sjinzh d9f8c53e4a
add zig codes for Section Queue and Deque (#291)
* add zig codes for Section 'Queue'

* update zig codes for Section 'Queue'

* update zig codes for Section 'Queue'

* update zig codes for Section 'Queue'

* update zig codes for Section 'Queue' and 'Deque'

* update zig codes for Section 'Queue' and 'Deque'

* update zig codes for Section 'Queue' and 'Deque'
2023-01-21 01:22:13 +08:00

46 lines
1.3 KiB
Zig

// File: queue.zig
// Created Time: 2023-01-15
// Author: sjinzh (sjinzh@gmail.com)
const std = @import("std");
const inc = @import("include");
// Driver Code
pub fn main() !void {
// 初始化队列
const L = std.TailQueue(i32);
var queue = L{};
// 元素入队
var node1 = L.Node{ .data = 1 };
var node2 = L.Node{ .data = 3 };
var node3 = L.Node{ .data = 2 };
var node4 = L.Node{ .data = 5 };
var node5 = L.Node{ .data = 4 };
queue.append(&node1);
queue.append(&node2);
queue.append(&node3);
queue.append(&node4);
queue.append(&node5);
std.debug.print("队列 queue = ", .{});
inc.PrintUtil.printQueue(i32, queue);
// 访问队首元素
var front = queue.first.?.data;
std.debug.print("\n队首元素 front = {}", .{front});
// 元素出队
front = queue.popFirst().?.data;
std.debug.print("\n出队元素 front = {},出队后 queue = ", .{front});
inc.PrintUtil.printQueue(i32, queue);
// 获取队列的长度
var size = queue.len;
std.debug.print("\n队列长度 size = {}", .{size});
// 判断队列是否为空
var empty = if (queue.len == 0) true else false;
std.debug.print("\n队列是否为空 = {}", .{empty});
_ = try std.io.getStdIn().reader().readByte();
}