arceos-hashmap 0.4.0

A exercise about supporting HashMap for ArceOS
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#![no_std]
#![no_main]

#[macro_use]
#[cfg(feature = "axstd")]
extern crate axstd as std;

use std::collections::HashMap;

#[cfg_attr(feature = "axstd", unsafe(no_mangle))]
fn main() {
    println!("Running memory tests...");
    test_hashmap();
    println!("Memory tests run OK!");
}

fn test_hashmap() {
    const N: u32 = 50_000;
    let mut m = HashMap::new();
    for value in 0..N {
        let key = format!("key_{value}");
        m.insert(key, value);
    }
    for (k, v) in m.iter() {
        if let Some(k) = k.strip_prefix("key_") {
            assert_eq!(k.parse::<u32>().unwrap(), *v);
        }
    }
    println!("test_hashmap() OK!");
}