hello-algo/codes/zig/chapter_hashing/hash_map.zig
codingonion 7ffef7e1d6
update the author info sjinzh -> codingonion (#1017)
* update author information

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---------

Co-authored-by: Yudong Jin <krahets@163.com>
2024-01-02 01:25:37 +08:00

54 lines
1.6 KiB
Zig

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