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55 lines
1.6 KiB
55 lines
1.6 KiB
// File: hash_map.zig
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// Created Time: 2023-01-13
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// Author: codingonion (coderonion@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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// 初始化哈希表
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var map = std.AutoHashMap(i32, []const u8).init(std.heap.page_allocator);
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// 延迟释放内存
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defer map.deinit();
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// 添加操作
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// 在哈希表中添加键值对 (key, value)
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try map.put(12836, "小哈");
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try map.put(15937, "小啰");
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try map.put(16750, "小算");
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try map.put(13276, "小法");
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try map.put(10583, "小鸭");
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std.debug.print("\n添加完成后，哈希表为\nKey -> Value\n", .{});
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inc.PrintUtil.printHashMap(i32, []const u8, map);
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// 查询操作
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// 向哈希表中输入键 key ，得到值 value
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var name = map.get(15937).?;
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std.debug.print("\n输入学号 15937 ，查询到姓名 {s}\n", .{name});
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// 删除操作
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// 在哈希表中删除键值对 (key, value)
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_ = map.remove(10583);
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std.debug.print("\n删除 10583 后，哈希表为\nKey -> Value\n", .{});
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inc.PrintUtil.printHashMap(i32, []const u8, map);
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// 遍历哈希表
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std.debug.print("\n遍历键值对 Key->Value\n", .{});
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inc.PrintUtil.printHashMap(i32, []const u8, map);
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std.debug.print("\n单独遍历键 Key\n", .{});
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var it = map.iterator();
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while (it.next()) |kv| {
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std.debug.print("{}\n", .{kv.key_ptr.*});
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}
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std.debug.print("\n单独遍历值 value\n", .{});
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it = map.iterator();
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while (it.next()) |kv| {
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std.debug.print("{s}\n", .{kv.value_ptr.*});
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}
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_ = try std.io.getStdIn().reader().readByte();
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}
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