How do I re-make my program so it uses recursion instead of while-loop?-CodePudding

I made a JavaScript program that randomly finds a certain number out of 100000 and prints out the amount of attempts it took (using a while loop).

Now I'm learning recursive function, and I wonder if it's possible to re-make this program using recursive. I've tried quite a few times, but with no luck.

Code:

let fun30 = num => {
    let attempts = 0;
    let randomNumber = 0;
    while (randomNumber !== num) {
        randomNumber = Math.round(Math.random() * 100000);
        attempts  ;
    }
    if (randomNumber === num) {
        console.log("It took "   attempts   " attempts");
    }
}

CodePudding user response：

let fun30 = num => {
    let attempts = 0;
    let randomNumber = Math.round(Math.random() * 100000);;

    if (randomNumber === num) {
        console.log("It took "   attempts   " attempts");
        return attempts   1;
    }
    else {
       return 1   fun30(num);
    }
}

Yes, recursion is not recommended for this code and problem as there is no assurance when the base condition will be met.

CodePudding user response：

let fun30 = num => {
  if (Math.round(Math.random() * 100000) === num) {
    return 1;
  }
  else {
      return 1   fun30(num)
  }
}

But this is not recommended as you will probably exceed the maximum call stack