Question 180310 in Javascript Question posted in
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What will be the output of the following javascript Code?

function recursion(x) {
  if (x < 0) return
  console.log(x)
  recursion(x - 1)
}
recursion(5);

I am getting the following output
5
4
3
2
1
0 => i want to know why 0, isn’t the condition will be false at this point

Tags:

3

Answers


  1. 0

    You have a wrong condition in the if, fix:

    function recursion(x) {
if (x < 1) return
  console.log(x)
 recursion(x-1)
}
recursion(5);
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  2. 0

    The condition you putted that is if(x = 5 < 0) that means it will iterates untill the "x" value is not less then "0". so according to your condition it takes to the 0 .
    I hopes you find the answer.

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  3. 0

    There are a few ways to fix this:

    • less-than-or-equals (<=) 0, or
    • less-than (<) 1
    function recursion(x) {
  if (x <= 0) return; // base case
  console.log(x);
  recursion(x - 1);
}
recursion(5);

    Here is the iterative version:

    function iteratation(x) {
  while (x > 0) {
    console.log(x--);
    // Alternatively, two separate statements:
    // >> console.log(x);
    // >> x--;
  }
}
iteratation(5);

    Could also be written as:

    function iteratation(x) {
  for (let i = x; x > 0; x--) {
    console.log(x);
  }
}
iteratation(5);
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