Code shared from the Rust Playground

playground.rs

use std::collections::HashMap;

type Table = HashMap<String, Vec<String>>;

fn show(table : &Table){
    for (row, items) in table {
        println!("Row : {}", row);
        for item in items {
            println!("Item : {}", item)
        }
    }
    println!("#####");
}

fn sort(table : &mut Table) {
    for (_row, items) in table {
        items.sort();
    }
    println!("#####")
}

fn main(){
    let mut table = Table::new();
    table.insert("Table1".to_string(), vec!["Pasta".to_string(), "Pizza".to_string()]);
    table.insert("Table2".to_string(), vec!["Roti".to_string(), "Panner".to_string()]);
    println!("Before Sorting");
    show(&table);
    sort(&mut table);
    println!("After Sorting");
    show(&table);
}