recursion.js

// to test these problems you can run 'node recursion.js' in your terminal
// Problem 1:
// hi

let n = 1;
while (n <= 10) {
  console.log('While Loop', n);
  n++;
}

// write a recursive - function called countToTen that mimics the while loop above.

const countToTen = (start = 1) => {
   console.log("Recursion", start);
	 if (start < 10) countToTen (start + 1);
};

// when you code is ready, un-comment the next line and run the file
 countToTen(); 
// console.log(countToTen());
/* ================ Next Problem ================= */

// Problem 2:

const factorial = n => {
  let result = 1;
  for (let i = 2; i <= n; i++) {
    result *= i;
  }
  return result;
};

console.log(factorial(5));

// write the above functionin a recursive way.

const recursiveFactorial = (n) => {
  return n === 0 ? 1 : n * recursiveFactorial(n - 1);
};

// when you code is ready, un-comment the next line and run the file
 console.log(recursiveFactorial(5));