diff --git a/src/sort/day_7.ts b/src/sort/day_7.ts
new file mode 100644
index 00000000..85b946ef
--- /dev/null
+++ b/src/sort/day_7.ts
@@ -0,0 +1,7 @@
+/*
+ * @Author: wangshan
+ * @Date: 2021-07-09 11:02:34
+ * @LastEditors: wangshan
+ * @LastEditTime: 2021-07-09 11:02:35
+ * @Description: 桶排序
+ */