Median

Returns the median of a collection of numbers.

• Find the midpoint and convert it to an integer, use sort.Float64s() to sort the given numbers.
• Return the number at the midpoint if length is odd, otherwise the average of the two middle numbers.

import (
    "math"
    "sort"
)

func Median(nums ...float64) float64 {
    m, n := int(math.Floor(float64(len(nums))/2.0)),
        nums[:]
    sort.Float64s(n)

    if len(nums)%2 == 0 {
        return (n[m] + n[m+1]) / 2.0
    }
    return n[m]
}

Median(5.0, 6.0, 50.0, 1.0, -5.0) // 5.0