numpy.random.rand() in golang

random.go

package random

import (
  "math/rand"
  "reflect"
)

// Generate a multidimensional matrix with random numbers
func Rand(seq ...int) interface{} {
	// Declare numbers to fill
	nums := seq[0]
	for _,el := range seq[1:] {
		nums *= el
	}

	// Generate the sequence of numbers
	left := []reflect.Value{}
	for i := 0; i < nums; i++ {
		left = append(left, reflect.ValueOf(rand.Float64()))
	}

	// Declare the type template
	t := reflect.TypeOf([]float64{})

	// Reverse the sequence
	for i, j := 0, len(seq)-1; i < j; i, j = i+1, j-1 {
		seq[i], seq[j] = seq[j], seq[i]
	}

	// Loop over the sequence
	for _,a := range seq {
		n := []reflect.Value{}
		for y := 0; y < nums / a; y++ {
			holder := reflect.Zero(t)
			for i := 0; i < a; i++ {
				holder = reflect.Append(holder, left[0])
				left = left[1:]
			}
			n = append(n, holder)
		}
		nums /= a
		left = n
		t = reflect.SliceOf(t)
	}
	return left[0].Interface()
}