use std::collections::HashMap;

fn main() {
    let mut v = vec![1, 2, 3, 4, 5];

    let first = &v[0];

    println!("The first element is: {}", first);
    v.push(6);
    let s1 = String::from("Hello, ");
    let s2 = String::from("world!");
    let s3 = s1 + &s2;

    println!("{}", s3);

    let s1 = String::from("tic");
    let s2 = String::from("tac");
    let s3 = String::from("toe");

    let s = s1 + "-" + &s2 + "-" + &s3;

    println!("{}", s);
    let s1 = String::from("tic");
    let s2 = String::from("tac");
    let s3 = String::from("toe");

    let s = format!("{}-{}-{}", s1, s2, s3);
    println!("{}", s);
    for c in "नमस्ते".chars() {
        println!("{}", c);
    }

    let mut scores = HashMap::new();

    scores.insert(String::from("Blue"), 10);

    scores.entry(String::from("Blue")).or_insert(50);
    scores.entry(String::from("Yellow")).or_insert(50);

    let team_name = String::from("Blue");
    let score = scores.get(&team_name);
    if let Some(i) = score {
        println!("{} team score is {}", team_name, i);
    } else {
        println!("{} team not found", team_name);
    }

    for (key, value) in &scores {
        println!("{}: {}", key, value);
    }


    let text = "hello world wonderful world";

    let mut map = HashMap::new();

    for word in text.split_whitespace() {
        let count = map.entry(word).or_insert(0);
        *count += 1;
    }

    println!("{:?}", map);
}