初始化提交

util/strings.go

@@ -0,0 +1,30 @@
+package util
+
+import "math/rand"
+
+const (
+	alphabet     = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
+	number       = "0123456789"
+	alphanumeric = alphabet + number
+)
+
+func RandStringAlphaNumeric(length int) (str string) {
+	for i := 0; i < length; i++ {
+		str += string(alphanumeric[rand.Intn(len(alphanumeric))])
+	}
+	return
+}
+
+func RandStringAlphabet(length int) (str string) {
+	for i := 0; i < length; i++ {
+		str += string(alphabet[rand.Intn(len(alphabet))])
+	}
+	return
+}
+
+func RandStringNumber(length int) (str string) {
+	for i := 0; i < length; i++ {
+		str += string(number[rand.Intn(len(number))])
+	}
+	return
+}