program_43.ts

/*
* Unchanged Magicians: Start with your work from Exercise 40. 
* Call the function make_great() with a copy of the array of magicians’ names. 
* Because the original array will be unchanged, return the new array and store it in a separate array. 
* Call show_magicians() with each array to show that you have one array of the original 
* names and one array with the Great added to each magician’s name.
*/

const magician2: string[] = ["Harry Potter", "Dumbledore", "Snape", "Weasley"];
const greatMagician: string[] = makeGreat2([...magician2]);

function showMagician2(magician2: string[]): void {
    for (let magicians of magician2) {
        console.log(`- ${magicians}`);
    }
}

function makeGreat2(magician2: string[]): string[] {
    const modifiedMagician: string[] = [];
    for (let i = 0; i < magician2.length; i++) {
        modifiedMagician.push("The Great" + " " + magician2[i]);
    }
    return modifiedMagician;
}

console.log("Harry Potter Movie Magicians \n");

console.log("Original Magician Names:");

showMagician2(magician2);

console.log("\n Great Magician Names:");
showMagician2(greatMagician);