public/subjects/capitalizing

capitalizing

Instructions

Complete the capitalize_first function that turns the first letter of a string uppercase.

Complete the title_case function that turns the first letter of each word in a string uppercase.

Complete the change_case function that turns the uppercase letters of a string into lowercase and the lowercase letters into uppercase.

Expected Functions

pub fn capitalize_first(input: &str) -> String {
}

pub fn title_case(input: &str) -> String {
}

pub fn change_case(input: &str) -> String {
}

Usage

Here is a program to test your function.

use capitalizing::capitalizing;

fn main() {
    println!("{}", capitalize_first("joe is missing"));
    println!("{}", title_case("jill is leaving A"));
    println!("{}",change_case("heLLo THere"));
}

And its output

student@ubuntu:~/[[ROOT]]/test$ cargo run
Joe is missing
Jill Is Leaving A
HEllO thERE
student@ubuntu:~/[[ROOT]]/test$