rand package in Go

Rand package implements pseudo-random number generators.
Random numbers are generated by a source. Use the Seed function to initialize the source. The source is safe for concurrent use by multiple goroutines.
<pre><code>
func genRand(size int) []int {
	rand.Seed(time.Now().UnixNano())
	slice := make([]int, size)
	for i := 0; i < size; i++ {
		slice[i] = rand.Intn(size*10)
	}
	return slice
}
</code></pre>