index.js

// --- Directions
// Write a function that accepts a string.  The function should
// capitalize the first letter of each word in the string then
// return the capitalized string.
// --- Examples
//   capitalize('a short sentence') --> 'A Short Sentence'
//   capitalize('a lazy fox') --> 'A Lazy Fox'
//   capitalize('look, it is working!') --> 'Look, It Is Working!'

// Solution 1
// function capitalize(str) {
//     let result = [];
//     for(let word of str.split(" ")) {
//         result.push(`${word[0].toUpperCase()}${word.slice(1)}`)
//     }
//     return result.join(" ")
// }

// Solution 2
// Create a string with the first element of the string capitalized
// For each character of the string if the character on the left is space capitalize and add to the result else add it to the result
function capitalize(str) {
    let result = str[0].toUpperCase();

    for (let i = 1; i < str.length; i++) {
        if (str[i - 1] === ' ') {
            result += str[i].toUpperCase();
        } else {
            result += str[i];
        }
    }

    return result;
}

module.exports = capitalize;