diff --git a/LICENSE b/LICENSE
new file mode 100644
index 00000000..60cb8f09
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2023 greyireland
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README.md b/README.md
index c726cd5e..39c073be 100644
--- a/README.md
+++ b/README.md
@@ -104,4 +104,6 @@
 | ✅   | [lvseouren](https://github.com/lvseouren) | [algorithm-study-record(c++ 实现)](https://github.com/lvseouren/algorithm-study-record) |
 | ✅   | [chienmy](https://github.com/chienmy) | [algorithm-pattern-java(Java 实现)](https://github.com/chienmy/algorithm-pattern-java), [在线文档 Gitbook](https://chienmy.gitbook.io/algorithm-pattern-java/) |
 | ✅ | [ligecarryme](https://github.com/ligecarryme) | [algorithm-pattern-JavaScript(JS+TS实现)](https://github.com/ligecarryme/algorithm-pattern-JavaScript) |
-
+| ✅ | [Esdeath](https://github.com/Esdeath) | [algorithm-pattern-dart(dart实现)](https://github.com/Esdeath/algorithm-pattern-dart),[在线文档 Gitbook](https://ayaseeri.gitbook.io/algorithm-pattern-dart/) |
+| ✅ | [longpi1](https://github.com/longpi1) | [algorithm-pattern-golang(golang实现)](https://github.com/longpi1/algorithm-pattern)
+| ✅ | [tpxxn](https://github.com/tpxxn) | [algorithm-pattern-CSharp(C# 实现)](https://github.com/tpxxn/algorithm-pattern-CSharp)
\ No newline at end of file