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80 lines
2.3 KiB
80 lines
2.3 KiB
// File: list.zig
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// Created Time: 2023-01-07
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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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// 初始化列表
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var list = std.ArrayList(i32).init(std.heap.page_allocator);
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// 延迟释放内存
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defer list.deinit();
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try list.appendSlice(&[_]i32{ 1, 3, 2, 5, 4 });
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std.debug.print("列表 list = ", .{});
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inc.PrintUtil.printList(i32, list);
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// 访问元素
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var num = list.items[1];
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std.debug.print("\n访问索引 1 处的元素，得到 num = {}", .{num});
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// 更新元素
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list.items[1] = 0;
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std.debug.print("\n将索引 1 处的元素更新为 0 ，得到 list = ", .{});
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inc.PrintUtil.printList(i32, list);
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// 清空列表
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list.clearRetainingCapacity();
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std.debug.print("\n清空列表后 list = ", .{});
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inc.PrintUtil.printList(i32, list);
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// 尾部添加元素
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try list.append(1);
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try list.append(3);
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try list.append(2);
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try list.append(5);
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try list.append(4);
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std.debug.print("\n添加元素后 list = ", .{});
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inc.PrintUtil.printList(i32, list);
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// 中间插入元素
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try list.insert(3, 6);
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std.debug.print("\n在索引 3 处插入数字 6 ，得到 list = ", .{});
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inc.PrintUtil.printList(i32, list);
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// 删除元素
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_ = list.orderedRemove(3);
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std.debug.print("\n删除索引 3 处的元素，得到 list = ", .{});
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inc.PrintUtil.printList(i32, list);
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// 通过索引遍历列表
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var count: i32 = 0;
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var i: i32 = 0;
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while (i < list.items.len) : (i += 1) {
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count += 1;
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}
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// 直接遍历列表元素
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count = 0;
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for (list.items) |_| {
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count += 1;
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}
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// 拼接两个列表
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var list1 = std.ArrayList(i32).init(std.heap.page_allocator);
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defer list1.deinit();
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try list1.appendSlice(&[_]i32{ 6, 8, 7, 10, 9 });
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try list.insertSlice(list.items.len, list1.items);
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std.debug.print("\n将列表 list1 拼接到 list 之后，得到 list = ", .{});
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inc.PrintUtil.printList(i32, list);
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// 排序列表
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std.sort.sort(i32, list.items, {}, comptime std.sort.asc(i32));
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std.debug.print("\n排序列表后 list = ", .{});
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inc.PrintUtil.printList(i32, list);
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_ = try std.io.getStdIn().reader().readByte();
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}
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