public/subjects/capitalizing

capitalizing

Instructions

Complete the capitalize_first function which converts the first letter of the string to uppercase.

Complete the title_case function which converts the first letter of each word in a string to uppercase.

Complete the change_case function which converts the uppercase letters of a string into lowercase, and the lowercase to 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 functions.

use capitalizing::*;

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

And its output

$ cargo run
Joe is missing
Jill Is Leaving A
HEllO thERE
$