returnt the smallest element that is not present in the array code example

Example 1: javascript find smallest number in an array

const arr = [14, 58, 20, 77, 66, 82, 42, 67, 42, 4]
const min = Math.min(...arr)
console.log(min)

Example 2: smallest possible number in python

The smallest possible number in python (not underflow to 0)
is the smallest possible subnormal number.

# L is the lowerbound exponent given by IEEE754 double precision.
L_sub < (machine_epsilon * 2**L)  =  (2**-52) * (2**-1022) = 2**-1074

Thus, smallest_number = 2*-1074 => 5e-324