diff --git "a/1.1\345\237\272\347\241\200\347\274\226\347\250\213\346\250\241\345\236\213.md" "b/1.1/1.1\345\237\272\347\241\200\347\274\226\347\250\213\346\250\241\345\236\213.md"
similarity index 100%
rename from "1.1\345\237\272\347\241\200\347\274\226\347\250\213\346\250\241\345\236\213.md"
rename to "1.1/1.1\345\237\272\347\241\200\347\274\226\347\250\213\346\250\241\345\236\213.md"
diff --git "a/1.2\346\225\260\346\215\256\346\212\275\350\261\241.md" "b/1.2/1.2\346\225\260\346\215\256\346\212\275\350\261\241.md"
similarity index 100%
rename from "1.2\346\225\260\346\215\256\346\212\275\350\261\241.md"
rename to "1.2/1.2\346\225\260\346\215\256\346\212\275\350\261\241.md"
diff --git a/1.3/Test.md b/1.3/Test.md
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/1.3/Test.md
@@ -0,0 +1 @@
+
diff --git a/README.md b/README.md
index e55adf7..21197c6 100644
--- a/README.md
+++ b/README.md
@@ -14,4 +14,5 @@
 ### 第一章 基础
    > [1.1 基础编程模型](https://github.com/tongji4m3/Algorithm-fourth-edition/blob/master/1.1%E5%9F%BA%E7%A1%80%E7%BC%96%E7%A8%8B%E6%A8%A1%E5%9E%8B.md )  
    >[1.2 数据抽象]( https://github.com/tongji4m3/Algorithm-fourth-edition/blob/master/1.2%E6%95%B0%E6%8D%AE%E6%8A%BD%E8%B1%A1.md) 
+   >[1.3 背包,队列和栈]( https://github.com/tongji4m3/Algorithm-fourth-edition/blob/master/1.2%E6%95%B0%E6%8D%AE%E6%8A%BD%E8%B1%A1.md) 
  
diff --git a/Test.java b/Test.java
new file mode 100644
index 0000000..1003cb6
--- /dev/null
+++ b/Test.java
@@ -0,0 +1,9 @@
+package com.tongji.algorithms_1_3;
+
+public class Test
+{
+	public static void main(String[] args)
+	{
+		System.out.println("hello world");
+	}
+}