GetExpDistributedInt returns a exponentially distributed number in the interval [0, +math.MaxFloat64), rounded to the nearest int.

GetHaversineDistance finds the distance (in km) between two latitude/longitude pairs using the Haversine formula.

GetRandomInt returns a non-negative pseudo-random number in the interval [0, max).

Min returns the minimum of two ints.

Mode returns the mode of a slice.