CODEWITHSUNDEEP
javascriptarrays
Debankan
Debankan

Reputation: 91

I am not getting the minimum value ,it showing 0, but in case of Math.max() it showing the right maximum value, why is it so?

I'm not getting the minimum value and it shows 0 but in this case of Math.max(), it shows the right maximum value. Why is it so?

function values(ar) {
  var min_val = 0;
  for(var i = 0; i < ar.length; i++) {
    min_val = Math.min(min_val,ar[i]);
  }
  document.write(min_val);
}
values([14,99, 10, 18,19, 11, 34]);

Upvotes: 1

Views: 1038

Answers (3)

ABDULLOKH MUKHAMMADJONOV
ABDULLOKH MUKHAMMADJONOV

Reputation: 5234

Math.min() receivec arguments like Math.min(-2, -3, -1) or with array Math.min(...arr). You are giving these arguments Math.min([14,99, 10, 18,19, 11, 34], 0) where 0 is minimum. So you are receiving 0. Also, no need for a loop as Math.min() finds the minimum. So, the solution would be:

    function values(ar) {
        var min_val = Math.min(...ar);
        //document.write(min_val);
        return min_val
    }
    console.log(values([14,99, 10, 18,19, 11, 34]))

or (to match your case)

function values(ar) {
    var min_val = Math.min(...ar);
    
    document.write(min_val);
}

in shortest form:

document.write(Math.min(...ar));

Upvotes: 0

Jip Helsen
Jip Helsen

Reputation: 1356

It always returns 0 because you compare it to min_val. Where min_val becomes the lowest value as 0 is lower then any value in the array. Therefor min_val will always be set equal to itself and stay 0. Here is my fix :

let ar =[14,99,10,18,19,11,34]
let min_val = Math.min(...ar)
console.log(min_val)
This is also more elegant than a for-loop.

Upvotes: 2

Slava Knyazev
Slava Knyazev

Reputation: 6081

For your expected behavior, in order to find the minimum, you want to start at the absolute maximum (Infinity).

    var min_val = Infinity;
    for(var i = 0; i < ar.length; i++) {
         min_val = Math.min(min_val,ar[i]);
            }
document.write(min_val);
}
values([14,99, 10, 18,19, 11, 34]);```

This will write Infinity for empty arrays, or the minimum value for the input.

Upvotes: 0

Related Questions