diff --git a/src/main/java/cn/whaifree/leetCode/middle/LeetCode209.java b/src/main/java/cn/whaifree/leetCode/Array/LeetCode209.java
similarity index 98%
rename from src/main/java/cn/whaifree/leetCode/middle/LeetCode209.java
rename to src/main/java/cn/whaifree/leetCode/Array/LeetCode209.java
index 838a30f..64c8b47 100644
--- a/src/main/java/cn/whaifree/leetCode/middle/LeetCode209.java
+++ b/src/main/java/cn/whaifree/leetCode/Array/LeetCode209.java
@@ -1,4 +1,4 @@
-package cn.whaifree.leetCode.middle;
+package cn.whaifree.leetCode.Array;
 
 import org.junit.Test;
 
diff --git a/src/main/java/cn/whaifree/leetCode/easy/LeetCode26.java b/src/main/java/cn/whaifree/leetCode/Array/LeetCode26.java
similarity index 98%
rename from src/main/java/cn/whaifree/leetCode/easy/LeetCode26.java
rename to src/main/java/cn/whaifree/leetCode/Array/LeetCode26.java
index f0fbaec..5de03d6 100644
--- a/src/main/java/cn/whaifree/leetCode/easy/LeetCode26.java
+++ b/src/main/java/cn/whaifree/leetCode/Array/LeetCode26.java
@@ -1,4 +1,4 @@
-package cn.whaifree.leetCode.easy;
+package cn.whaifree.leetCode.Array;
 
 import org.junit.Test;
 
diff --git a/src/main/java/cn/whaifree/leetCode/easy/LeetCode27.java b/src/main/java/cn/whaifree/leetCode/Array/LeetCode27.java
similarity index 98%
rename from src/main/java/cn/whaifree/leetCode/easy/LeetCode27.java
rename to src/main/java/cn/whaifree/leetCode/Array/LeetCode27.java
index a46b304..577c617 100644
--- a/src/main/java/cn/whaifree/leetCode/easy/LeetCode27.java
+++ b/src/main/java/cn/whaifree/leetCode/Array/LeetCode27.java
@@ -1,4 +1,4 @@
-package cn.whaifree.leetCode.easy;
+package cn.whaifree.leetCode.Array;
 
 import org.junit.Test;
 
diff --git a/src/main/java/cn/whaifree/leetCode/middle/LeetCode34.java b/src/main/java/cn/whaifree/leetCode/Array/LeetCode34.java
similarity index 98%
rename from src/main/java/cn/whaifree/leetCode/middle/LeetCode34.java
rename to src/main/java/cn/whaifree/leetCode/Array/LeetCode34.java
index 54dbe6c..92e2f15 100644
--- a/src/main/java/cn/whaifree/leetCode/middle/LeetCode34.java
+++ b/src/main/java/cn/whaifree/leetCode/Array/LeetCode34.java
@@ -1,4 +1,4 @@
-package cn.whaifree.leetCode.middle;
+package cn.whaifree.leetCode.Array;
 
 import org.junit.Test;
 
diff --git a/src/main/java/cn/whaifree/leetCode/easy/LeetCode35.java b/src/main/java/cn/whaifree/leetCode/Array/LeetCode35.java
similarity index 98%
rename from src/main/java/cn/whaifree/leetCode/easy/LeetCode35.java
rename to src/main/java/cn/whaifree/leetCode/Array/LeetCode35.java
index 14566ee..4967351 100644
--- a/src/main/java/cn/whaifree/leetCode/easy/LeetCode35.java
+++ b/src/main/java/cn/whaifree/leetCode/Array/LeetCode35.java
@@ -1,4 +1,4 @@
-package cn.whaifree.leetCode.easy;
+package cn.whaifree.leetCode.Array;
 
 import org.junit.Test;
 
diff --git a/src/main/java/cn/whaifree/leetCode/easy/LeetCode367.java b/src/main/java/cn/whaifree/leetCode/Array/LeetCode367.java
similarity index 97%
rename from src/main/java/cn/whaifree/leetCode/easy/LeetCode367.java
rename to src/main/java/cn/whaifree/leetCode/Array/LeetCode367.java
index 413c0b9..98612fa 100644
--- a/src/main/java/cn/whaifree/leetCode/easy/LeetCode367.java
+++ b/src/main/java/cn/whaifree/leetCode/Array/LeetCode367.java
@@ -1,9 +1,7 @@
-package cn.whaifree.leetCode.easy;
+package cn.whaifree.leetCode.Array;
 
 import org.junit.Test;
 
-import java.text.Format;
-
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
 
diff --git a/src/main/java/cn/whaifree/leetCode/middle/LeetCode54.java b/src/main/java/cn/whaifree/leetCode/Array/LeetCode54.java
similarity index 99%
rename from src/main/java/cn/whaifree/leetCode/middle/LeetCode54.java
rename to src/main/java/cn/whaifree/leetCode/Array/LeetCode54.java
index 671b1f1..c33c17d 100644
--- a/src/main/java/cn/whaifree/leetCode/middle/LeetCode54.java
+++ b/src/main/java/cn/whaifree/leetCode/Array/LeetCode54.java
@@ -1,4 +1,4 @@
-package cn.whaifree.leetCode.middle;
+package cn.whaifree.leetCode.Array;
 
 import org.junit.Test;
 
diff --git a/src/main/java/cn/whaifree/leetCode/middle/LeetCode59.java b/src/main/java/cn/whaifree/leetCode/Array/LeetCode59.java
similarity index 97%
rename from src/main/java/cn/whaifree/leetCode/middle/LeetCode59.java
rename to src/main/java/cn/whaifree/leetCode/Array/LeetCode59.java
index 2c2546a..510441b 100644
--- a/src/main/java/cn/whaifree/leetCode/middle/LeetCode59.java
+++ b/src/main/java/cn/whaifree/leetCode/Array/LeetCode59.java
@@ -1,4 +1,4 @@
-package cn.whaifree.leetCode.middle;
+package cn.whaifree.leetCode.Array;
 
 import org.junit.Test;
 
diff --git a/src/main/java/cn/whaifree/leetCode/easy/LeetCode69.java b/src/main/java/cn/whaifree/leetCode/Array/LeetCode69.java
similarity index 97%
rename from src/main/java/cn/whaifree/leetCode/easy/LeetCode69.java
rename to src/main/java/cn/whaifree/leetCode/Array/LeetCode69.java
index a2cb9de..ed27632 100644
--- a/src/main/java/cn/whaifree/leetCode/easy/LeetCode69.java
+++ b/src/main/java/cn/whaifree/leetCode/Array/LeetCode69.java
@@ -1,4 +1,4 @@
-package cn.whaifree.leetCode.easy;
+package cn.whaifree.leetCode.Array;
 
 import org.junit.Test;
 
diff --git a/src/main/java/cn/whaifree/leetCode/easy/LeetCode704.java b/src/main/java/cn/whaifree/leetCode/Array/LeetCode704.java
similarity index 99%
rename from src/main/java/cn/whaifree/leetCode/easy/LeetCode704.java
rename to src/main/java/cn/whaifree/leetCode/Array/LeetCode704.java
index 1ee15b7..e4b863c 100644
--- a/src/main/java/cn/whaifree/leetCode/easy/LeetCode704.java
+++ b/src/main/java/cn/whaifree/leetCode/Array/LeetCode704.java
@@ -1,4 +1,4 @@
-package cn.whaifree.leetCode.easy;
+package cn.whaifree.leetCode.Array;
 
 import org.junit.Assert;
 import org.junit.Test;
diff --git a/src/main/java/cn/whaifree/leetCode/easy/LeetCode977.java b/src/main/java/cn/whaifree/leetCode/Array/LeetCode977.java
similarity index 99%
rename from src/main/java/cn/whaifree/leetCode/easy/LeetCode977.java
rename to src/main/java/cn/whaifree/leetCode/Array/LeetCode977.java
index 38a8e18..fd6652a 100644
--- a/src/main/java/cn/whaifree/leetCode/easy/LeetCode977.java
+++ b/src/main/java/cn/whaifree/leetCode/Array/LeetCode977.java
@@ -1,4 +1,4 @@
-package cn.whaifree.leetCode.easy;
+package cn.whaifree.leetCode.Array;
 
 import org.junit.Test;
 
diff --git a/src/main/java/cn/whaifree/leetCode/LeetCode001.java b/src/main/java/cn/whaifree/leetCode/LeetCode001.java
index 1b1927b..3504933 100644
--- a/src/main/java/cn/whaifree/leetCode/LeetCode001.java
+++ b/src/main/java/cn/whaifree/leetCode/LeetCode001.java
@@ -2,6 +2,9 @@ package cn.whaifree.leetCode;
 
 import java.util.HashMap;
 import java.util.Map;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.locks.Lock;
+import java.util.concurrent.locks.ReentrantLock;
 
 /**
  *
@@ -29,6 +32,8 @@ import java.util.Map;
 public class LeetCode001 {
 
 
+
+
     /**
      * map存储，key为nums内的值，value为下标
      * @param nums
diff --git a/src/main/java/cn/whaifree/leetCode/easy/LeetCode203.java b/src/main/java/cn/whaifree/leetCode/LinkedList/LeetCode203.java
similarity index 99%
rename from src/main/java/cn/whaifree/leetCode/easy/LeetCode203.java
rename to src/main/java/cn/whaifree/leetCode/LinkedList/LeetCode203.java
index c88c6b8..e2c8b8f 100644
--- a/src/main/java/cn/whaifree/leetCode/easy/LeetCode203.java
+++ b/src/main/java/cn/whaifree/leetCode/LinkedList/LeetCode203.java
@@ -1,4 +1,4 @@
-package cn.whaifree.leetCode.easy;
+package cn.whaifree.leetCode.LinkedList;
 
 
 import cn.whaifree.leetCode.model.ListNode;
diff --git a/src/main/java/cn/whaifree/leetCode/easy/LeetCode206.java b/src/main/java/cn/whaifree/leetCode/LinkedList/LeetCode206.java
similarity index 98%
rename from src/main/java/cn/whaifree/leetCode/easy/LeetCode206.java
rename to src/main/java/cn/whaifree/leetCode/LinkedList/LeetCode206.java
index e73bc64..3611672 100644
--- a/src/main/java/cn/whaifree/leetCode/easy/LeetCode206.java
+++ b/src/main/java/cn/whaifree/leetCode/LinkedList/LeetCode206.java
@@ -1,4 +1,4 @@
-package cn.whaifree.leetCode.easy;
+package cn.whaifree.leetCode.LinkedList;
 
 import cn.whaifree.leetCode.model.ListNode;
 import com.sun.jmx.remote.internal.ArrayQueue;
diff --git a/src/main/java/cn/whaifree/leetCode/middle/LeetCode24.java b/src/main/java/cn/whaifree/leetCode/LinkedList/LeetCode24.java
similarity index 98%
rename from src/main/java/cn/whaifree/leetCode/middle/LeetCode24.java
rename to src/main/java/cn/whaifree/leetCode/LinkedList/LeetCode24.java
index 3aa792b..da8f13f 100644
--- a/src/main/java/cn/whaifree/leetCode/middle/LeetCode24.java
+++ b/src/main/java/cn/whaifree/leetCode/LinkedList/LeetCode24.java
@@ -1,4 +1,4 @@
-package cn.whaifree.leetCode.middle;
+package cn.whaifree.leetCode.LinkedList;
 
 import org.junit.Test;
 import cn.whaifree.leetCode.model.ListNode;
diff --git a/src/main/java/cn/whaifree/leetCode/middle/LeetCode707.java b/src/main/java/cn/whaifree/leetCode/LinkedList/LeetCode707.java
similarity index 99%
rename from src/main/java/cn/whaifree/leetCode/middle/LeetCode707.java
rename to src/main/java/cn/whaifree/leetCode/LinkedList/LeetCode707.java
index 51f1fe5..173b94f 100644
--- a/src/main/java/cn/whaifree/leetCode/middle/LeetCode707.java
+++ b/src/main/java/cn/whaifree/leetCode/LinkedList/LeetCode707.java
@@ -1,4 +1,4 @@
-package cn.whaifree.leetCode.middle;
+package cn.whaifree.leetCode.LinkedList;
 
 import org.junit.Test;
 
diff --git a/src/main/java/cn/whaifree/leetCode/middle/LeetCode707_2.java b/src/main/java/cn/whaifree/leetCode/LinkedList/LeetCode707_2.java
similarity index 99%
rename from src/main/java/cn/whaifree/leetCode/middle/LeetCode707_2.java
rename to src/main/java/cn/whaifree/leetCode/LinkedList/LeetCode707_2.java
index 131d071..66d601e 100644
--- a/src/main/java/cn/whaifree/leetCode/middle/LeetCode707_2.java
+++ b/src/main/java/cn/whaifree/leetCode/LinkedList/LeetCode707_2.java
@@ -1,4 +1,4 @@
-package cn.whaifree.leetCode.middle;
+package cn.whaifree.leetCode.LinkedList;
 
 import org.junit.Test;