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recursion.js
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41 lines (32 loc) · 902 Bytes
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// to test these problems you can run 'node recursion.js' in your terminal
// Problem 1:
//let n = 1;
//while (n <= 10) {
//console.log('While Loop', n);
//n++;
//}
// write a recursive - function called countToTen that mimics the while loop above.
let countToTen = num => {
if (num > 10) return;
console.log(num);
countToTen(++num);
}
// when you code is ready, un-comment the next line and run the file
console.log(countToTen(1));
/* ================ 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));
let recursiveFactorial = num => {
if (num === 0) return 1;
num *= recursiveFactorial(num-1);
return num;
}
// when you code is ready, un-comment the next line and run the file
console.log(recursiveFactorial(5));