!changed mathutil package to mathy, removed int/string casting from mathy

algos/random-nums.go

@@ -0,0 +1,13 @@
+package algos
+
+import (
+	"math/rand"
+	"time"
+)
+
+var rn = rand.New(rand.NewSource(time.Now().UnixNano()))
+
+// RandomInt returns a random int from zero through upper - 1
+func RandomInt(upper int) int {
+	return rn.Intn(upper)
+}