Question

How to calculate factorial of a number using recursion in TypeScript

Answer 1

function factorial(x : number) : number {
    if (x == 0) {
        return 1;
    }
    else {
        return x * factorial(x - 1);
    }
}
 
const n = 6
 
const fact = factorial(n);
     
console.log(fact);
   

     

     
/*
run:
     
720 
     
*/

 

70+ SQL courses for beginners and professionals

Answer 2

function factorial(x : number) : number {
    return (x == 1 || x == 0) ? 1 : x * factorial(x - 1);
}
 
const n = 6
 
const fact = factorial(n);
     
console.log(fact);
   
     
     
     
/*
run:
     
720 
     
*/

 

70+ SQL courses for beginners and professionals