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recursion.js
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52 lines (40 loc) · 1.02 KB
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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.
const countToTen = (n) => {
//Establish number variable
while(n < 11){
console.log('While Loop', n);
n++;
return countToTen(n);
}
}
// 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));
// write the above function in a recursive way.
const recursiveFactorial = (n) => {
if(n<0){
return "Please enter a positive integer";
}
if(n>=1){
return (n * recursiveFactorial(n-1));
}
return n;
}
// when your code is ready, un-comment the next line and run the file
console.log(recursiveFactorial(5));