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recursion.js
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43 lines (36 loc) · 928 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.
// code here
const countToTen = n => {
if (n > 10) return;
console.log('While Loop', n);
return countToTen(++n);
}
// when you code is ready, un-comment the next line and run the file
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));
// write the above function in a recursive way.
const frec = (n) => {
if (n === 0){
return 1;
}
return n * frec(n-1);
}
// when your code is ready, un-comment the next line and run the file
// console.log(recursiveFactorial());
console.log(frec(5))