storeCatalogue

function storeCatalogue (productInput) {
    //Without nested Map();

    // let dataProduct = new Map ();
    // for (let product of productInput) {
    //  let [productName,productPrice] = product.split (" : ");
    //  productPrice = Number (productPrice);
    //  dataProduct.set (productName, productPrice);
    // }
    // let sorted = Array.from (dataProduct).sort ();
    // let firstLetter = [];
    // for (let [key,value] of sorted) {
    //  firstLetter.push (key[0]);
    // }
    // let unique = firstLetter.filter ((v, i, a) => a.indexOf (v) === i);
    // for (let i = 0; i < unique.length; i++) {
    //  console.log (unique[i]);
    //  for (let [key,value] of sorted) {
    //      if (unique[i] == key[0]) {
    //          console.log (`  ${key}: ${value}`);
    //      }
    //  }
    // }

    //With Nested Map();

    let initials = new Map ();

    for (let initial of productInput) {
        let product = initial.split (" : ");
        let productName = product[0];
        let productPrice = Number (product[1]);
        let init = productName[0];
        if (!initials.has (init)) {
            initials.set (init, new Map ());
        }
        if (!initials.get (init).has (productName)) {
            initials.get (init).set (productName, productPrice);
        }
    }

    function alphabeticallyCompare (a, b) {
        return a[0].toLowerCase().localeCompare (b[0].toLowerCase());

    }
    let sorted = Array.from (initials).sort (alphabeticallyCompare);

    for (let [key,value] of sorted) {
        console.log (key);

        let productData = Array.from(value).sort(alphabeticallyCompare);
        for (let [k,v] of productData) {
            console.log (`  ${k}: ${v}`);
        }
    }
}
storeCatalogue (
    [
        "Appricot : 20.4",
        "Fridge : 1500",
        "TV : 1499",
        "Deodorant : 10",
        "Boiler : 300",
        "Apple : 1.25",
        "Anti-Bug Spray : 15",
        "T-Shirt : 10"
    ]);