docs: add doc for package random

docs/random.md

@@ -0,0 +1,107 @@
+# Random
+Package random implements some basic functions to generate random int and string.
+
+<div STYLE="page-break-after: always;"></div>
+
+## Source:
+
+[https://github.com/duke-git/lancet/blob/main/random/random.go](https://github.com/duke-git/lancet/blob/main/random/random.go)
+
+
+<div STYLE="page-break-after: always;"></div>
+
+## Usage:
+```go
+import (
+    "github.com/duke-git/lancet/random"
+)
+```
+
+<div STYLE="page-break-after: always;"></div>
+
+## Index
+- [RandBytes](#RandBytes)
+- [RandInt](#RandInt)
+- [RandString](#RandString)
+
+<div STYLE="page-break-after: always;"></div>
+
+## Documentation
+
+
+### <span id="RandBytes">RandBytes</span>
+<p>Generate random byte slice.</p>
+
+<b>Signature:</b>
+
+```go
+func RandBytes(length int) []byte
+```
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/random"
+)
+
+func main() {
+	randBytes := random.RandBytes(4)
+	fmt.Println(randBytes)
+}
+```
+
+
+### <span id="RandInt">RandInt</span>
+<p>Generate random int between min and max, may contain min, not max.</p>
+
+<b>Signature:</b>
+
+```go
+func RandInt(min, max int) int
+```
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/random"
+)
+
+func main() {
+	rInt := random.RandInt(1, 10)
+	fmt.Println(rInt)
+}
+```
+
+
+
+### <span id="RandString">RandInt</span>
+<p>Generate random given length string.</p>
+
+<b>Signature:</b>
+
+```go
+func RandString(length int) string
+```
+<b>Example:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/random"
+)
+
+func main() {
+	randStr := random.RandString(6)
+	fmt.Println(randStr)
+}
+```
+
+

docs/random_zh-CN.md

@@ -0,0 +1,107 @@
+# Random
+random随机数生成器包，可以生成随机[]bytes, int, string。
+
+<div STYLE="page-break-after: always;"></div>
+
+## 源码:
+
+[https://github.com/duke-git/lancet/blob/main/random/random.go](https://github.com/duke-git/lancet/blob/main/random/random.go)
+
+
+<div STYLE="page-break-after: always;"></div>
+
+## 用法:
+```go
+import (
+    "github.com/duke-git/lancet/random"
+)
+```
+
+<div STYLE="page-break-after: always;"></div>
+
+## 目录
+- [RandBytes](#RandBytes)
+- [RandInt](#RandInt)
+- [RandString](#RandString)
+
+<div STYLE="page-break-after: always;"></div>
+
+## 文档
+
+
+### <span id="RandBytes">RandBytes</span>
+<p>生成随机字节切片</p>
+
+<b>函数签名:</b>
+
+```go
+func RandBytes(length int) []byte
+```
+<b>例子:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/random"
+)
+
+func main() {
+	randBytes := random.RandBytes(4)
+	fmt.Println(randBytes)
+}
+```
+
+
+### <span id="RandInt">RandInt</span>
+<p>生成随机int, 范围[min, max)</p>
+
+<b>函数签名:</b>
+
+```go
+func RandInt(min, max int) int
+```
+<b>例子:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/random"
+)
+
+func main() {
+	rInt := random.RandInt(1, 10)
+	fmt.Println(rInt)
+}
+```
+
+
+
+### <span id="RandString">RandInt</span>
+<p>生成随机给定长度的随机字符串</p>
+
+<b>函数签名:</b>
+
+```go
+func RandString(length int) string
+```
+<b>例子:</b>
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/duke-git/lancet/random"
+)
+
+func main() {
+	randStr := random.RandString(6)
+	fmt.Println(randStr)
+}
+```
+
+