function factorial_recursion(n: number): number {
if (n === 0 || n === 1) {
return 1;
}
return n * factorial_recursion(n - 1);
}
function factorial_non_recursion(n: number): number {
let result: number = 1;
for (let i: number = 2; i <= n; ++i) {
result *= i;
}
return result;
}
let ans1 = factorial_recursion(3);
let ans2 = factorial_recursion(5);
let ans3 = factorial_recursion(7);
console.log(ans1);
console.log(ans2);
console.log(ans3);
let ans4 = factorial_non_recursion(3);
let ans5 = factorial_non_recursion(5);
let ans6 = factorial_non_recursion(7);
console.log(ans4);
console.log(ans5);
console.log(ans6);