diff --git a/src/dataANDcalc/java/algorithm/HanoTower.java b/src/dataANDcalc/java/algorithm/HanoTower.java
index d0109a8..60f293b 100644
--- a/src/dataANDcalc/java/algorithm/HanoTower.java
+++ b/src/dataANDcalc/java/algorithm/HanoTower.java
@@ -2,6 +2,9 @@ package algorithm;
 
 import java.util.Stack;
 
+/**
+ * 汉诺塔问题---利用分治算法实现（核心是递归）
+ */
 public class HanoTower {
 
     private Stack<Integer> towerA;