gistfile1.txt

// NUMBER 1
  function factorial(n) {
    if (n < 0) {
        return "Factorial is not defined for negative numbers";
    }
    if (n === 0 || n === 1) {
        return 1;
    }
    let result = 1;
    for (let i = 1; i <= n; i++) {
        result *= i;
    }
    return result;
  }
  console.log(factorial(4));
  
// NUMBER 2

let arrayOfNumbers = [1, 2, 3, 4, 5];
let i;
let max = arrayOfNumbers[0];
for (i = 1; i < arrayOfNumbers.length; i++){
    if (arrayOfNumbers[i] > max) {
        max = arrayOfNumbers[i];
    }
}
console.log("The largest number is: " + max);

// NUMBER 3
let text = "Hello World!";
let num = 0;
for (let i = 0; i < text.length; i++) {
    let character = text.charAt(i).toLowerCase();
    let isLetter = character >= 'a' && character <= 'z';
    let isVowel = 'aeiou'.includes(character);
    if (isLetter && !isVowel) {
        num++;
    }
}
console.log("Number of consonants:", num);

// NUMBER 4
let multiplicationTable = 5;
for (let i = 1; i <= 10; i++) {
    console.log(`${multiplicationTable} x ${i} = ${multiplicationTable * i}`);
}

//NUMBER 5
function rv(string, callBack) {
    let str = string.toLowerCase();
    let reversedString = str.split('').reverse().join('');
    callBack(reversedString);
}
rv("Hello World!", function(reversed) {
    console.log("Reversed string:", reversed);
});