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52 lines
1.8 KiB
52 lines
1.8 KiB
// File: deque.zig
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// Created Time: 2023-01-15
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// Author: sjinzh (sjinzh@gmail.com)
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const std = @import("std");
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const inc = @import("include");
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// Driver Code
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pub fn main() !void {
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// 初始化双向队列
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const L = std.TailQueue(i32);
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var deque = L{};
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// 元素入队
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var node1 = L.Node{ .data = 2 };
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var node2 = L.Node{ .data = 5 };
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var node3 = L.Node{ .data = 4 };
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var node4 = L.Node{ .data = 3 };
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var node5 = L.Node{ .data = 1 };
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deque.append(&node1); // 添加至队尾
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deque.append(&node2);
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deque.append(&node3);
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deque.prepend(&node4); // 添加至队首
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deque.prepend(&node5);
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std.debug.print("双向队列 deque = ", .{});
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inc.PrintUtil.printQueue(i32, deque);
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// 访问元素
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var peekFirst = deque.first.?.data; // 队首元素
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std.debug.print("\n队首元素 peekFirst = {}", .{peekFirst});
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var peekLast = deque.last.?.data; // 队尾元素
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std.debug.print("\n队尾元素 peekLast = {}", .{peekLast});
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// 元素出队
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var pollFirst = deque.popFirst().?.data; // 队首元素出队
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std.debug.print("\n队首出队元素 pollFirst = {}，队首出队后 deque = ", .{pollFirst});
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inc.PrintUtil.printQueue(i32, deque);
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var pollLast = deque.pop().?.data; // 队尾元素出队
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std.debug.print("\n队尾出队元素 pollLast = {}，队尾出队后 deque = ", .{pollLast});
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inc.PrintUtil.printQueue(i32, deque);
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// 获取双向队列的长度
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var size = deque.len;
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std.debug.print("\n双向队列长度 size = {}", .{size});
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// 判断双向队列是否为空
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var is_empty = if (deque.len == 0) true else false;
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std.debug.print("\n双向队列是否为空 = {}", .{is_empty});
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_ = try std.io.getStdIn().reader().readByte();
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}
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