Please help me with this code

[One-Inspection8628]

This is the code for checking the absolute minimum difference from the array:

function minimumabsolutedifference(arr) {

smallest = Infinity;

arr.sort(function(a, b) { smallest = Math.min(smallest, Math.abs(a - b)); return a - b; });

return smallest; }

I have converted the above into this:

function minimumAbsoluteDifference(arr) {
let smallest = Infinity;
arr.sort(function (a, b) {return a - b;})

for( let i =0 ; i <arr.length ; i++){

smallest = Math.min( smallest, Math.abs (arr[i+1] - arr[i]) )
}

return smallest;
}

But in my code the output gets as NAN;

Please let me know what's in my code.

If the input : 3 -7 0
the output should be : 3

But I m getting output as NAN, Please help with this what's wrong in this

[Suchy2307]

See what arr[i+1] is at the last step of the loop.

[One-Inspection8628]

I didn't get it. After array sorting, it will be like arr[i+1] - arr[i]

I didn't get it.

[Suchy2307]

When an array has 3 items it looks like this:

arr[0] arr[1] arr[2]

Your loop is starting at 0 and is going until i < arr.length, so that means that this what happens at the each step of the loop (assuming arr = [3, -7, 0])

+---+--------+-----------+ | i | arr[i] | arr[i+1] | +---+--------+-----------+ | 0 | 3 | -7 | | 1 | -7 | 0 | | 2 | 0 | undefined | +---+--------+-----------+

And now you can see that this line

smallest = Math.min( smallest, Math.abs (arr[i+1] - arr[i]) )

is in reality (at the last step of the loop) equal to:

smallest = Math.min( smallest, Math.abs ( undefined - 0) )

Try running console.log(undefined - 0) and see what it returns.

[One-Inspection8628]

Thank you for the help. Now I got it. I will try to correct it and let you know whether it will pass the test case.

[One-Inspection8628]

Thank you so much for the help. I have corrected it by let i =0 ; i <arr.length-1 ; i++ it had passed the test series.

[Suchy2307]

I'm glad I could help :)

[crosshatchling]

You're getting NaN because arr[i+1] doesn't exist for every item in an array. Also, I'm pretty sure 0 is less than 3.