adding two more examples for preservation

cmd/random-order/main.go

@@ -0,0 +1,39 @@
+package main
+
+import (
+	"fmt"
+	"hash/crc32"
+	"hash/crc64"
+	"math/rand"
+)
+
+var (
+	names = []string{
+		"John",
+		"Paul",
+		"Peter",
+		"Sam",
+		"Susan",
+		"Sarah",
+		"Melony",
+	}
+	date = "2024-08-14"
+)
+
+func removeIndex(s []string, i int) []string {
+	ret := make([]string, 0)
+	ret = append(ret, s[:i]...)
+	return append(ret, s[i+1:]...)
+}
+
+func main() {
+	seed := crc64.Checksum([]byte(date), crc64.MakeTable(crc32.IEEE))
+	r := rand.New(rand.NewSource((int64(seed))))
+
+	totalNames := len(names) - 1
+	for i := 0; i <= totalNames; i++ {
+		index := r.Intn(len(names))
+		fmt.Printf("%s\n", names[index])
+		names = removeIndex(names, index)
+	}
+}