diff --git a/src/ main/ java/ MoveZeroes/MoveZeroes.java b/src/ main/ java/ MoveZeroes/MoveZeroes.java
deleted file mode 100644
index 609175d..0000000
--- a/src/ main/ java/ MoveZeroes/MoveZeroes.java	
+++ /dev/null
@@ -1,22 +0,0 @@
-
-public class MoveZeroes {
-
-	public void moveZeroes(int[] nums) {
-        for(int i=0; i<nums.length;i++){
-        	//获取为0的下标
-        	if(nums[i]==0)
-        	{
-        		int k = i;
-        		for(int j=i+1;j<nums.length;j++){
-        			if(nums[j]!=0){
-        				int a = nums[j];
-        				nums[j] = nums[k];
-        				nums[k] = a;
-        				k=j;
-        			}
-        		}
-        	}
-        }
-    }
-
-}
diff --git a/src/ main/ java/ MoveZeroes/fate0928 b/src/ main/ java/ MoveZeroes/fate0928
deleted file mode 100644
index 8b13789..0000000
--- a/src/ main/ java/ MoveZeroes/fate0928	
+++ /dev/null
@@ -1 +0,0 @@
-
diff --git a/src/main/java/GenerateParentheses/ZHANGJIKAI5/GenerateParentheses.java b/src/main/java/GenerateParentheses/ZHANGJIKAI5/GenerateParentheses.java
new file mode 100644
index 0000000..adc2954
--- /dev/null
+++ b/src/main/java/GenerateParentheses/ZHANGJIKAI5/GenerateParentheses.java
@@ -0,0 +1,41 @@
+package GenerateParentheses.ZHANGJIKAI5;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * author锛歓HANGJIKAI5
+ * 棰樼洰锛�22. Generate Parentheses
+ * 瑙ｉ鎬濊矾锛�
+ */
+public class GenerateParentheses {
+
+    public List<String> generateParenthesis(int n) {
+        List<String> list = new ArrayList<String>();
+        List<Character> left = new ArrayList<Character>(n);
+        List<Character> right = new ArrayList<Character>(n);
+        for (int i=0; i<n; i++) {
+
+            for (int j=0; j<n; j++) {
+
+            }
+
+        }
+
+
+
+
+        return list;
+    }
+
+    public static void main(String[] args) {
+        int n = 3;
+        GenerateParentheses generateParentheses = new GenerateParentheses();
+        List<String> list = generateParentheses.generateParenthesis(n);
+        for (String s: list
+             ) {
+            System.out.println(s);
+        }
+    }
+
+}
diff --git a/src/main/java/MoveZeroes/ZHANGJIKAI5/MoveZeroes.java b/src/main/java/MoveZeroes/ZHANGJIKAI5/MoveZeroes.java
index e4b677a..ea40033 100644
--- a/src/main/java/MoveZeroes/ZHANGJIKAI5/MoveZeroes.java
+++ b/src/main/java/MoveZeroes/ZHANGJIKAI5/MoveZeroes.java
@@ -1,4 +1,4 @@
-package com.its.leet.code.leetcode.MoveZeroes;
+package MoveZeroes.ZHANGJIKAI5;
 
 
 /**
diff --git a/src/main/java/RemoveElement/ZHANGJIKAI5/RemoveElement.java b/src/main/java/RemoveElement/ZHANGJIKAI5/RemoveElement.java
new file mode 100644
index 0000000..fc02956
--- /dev/null
+++ b/src/main/java/RemoveElement/ZHANGJIKAI5/RemoveElement.java
@@ -0,0 +1,52 @@
+package RemoveElement.ZHANGJIKAI5;
+
+
+/**
+ * author锛歓HANGJIKAI5
+ * 棰樼洰锛�27. 绉婚櫎鍏冪礌
+ * 瑙ｉ鎬濊矾锛氶鐩鏄撹繘鍏ヨ鍖猴紝瑕佽緭鍑烘暟缁勯暱搴︼紝鎴戠涓�鎯虫硶鏄copy涓�涓暟缁勶紝浣嗘槸杩欐牱鍙堟病鏈夊姙娉曞仛鍒扮┖闂村鏉傚害O(1)
+ * 瀹￠鍚庯紝鍙戠幇瀹炰緥閲屾湁璇达細浣犱笉闇�瑕佽�冭檻鏁扮粍涓秴鍑烘柊闀垮害鍚庨潰鐨勫厓绱犮��
+ * 鐢辨瀹氫箟涓�涓袱涓彉閲忥紝涓�涓猧锛岃褰曢暱搴︼紱涓�涓猼emp锛屼綔涓轰氦鎹㈠厓绱犵殑涓棿鍙橀噺銆�
+ */
+public class RemoveElement {
+
+    /**
+     * 绗竴娆″畬鎴愶細
+     * 鎵ц鐢ㄦ椂 : 1 ms, 鍦≧emove Element鐨凧ava鎻愪氦涓嚮璐ヤ簡99.59% 鐨勭敤鎴�
+     * 鍐呭瓨娑堣�� : 35.1 MB, 鍦≧emove Element鐨凧ava鎻愪氦涓嚮璐ヤ簡85.91% 鐨勭敤鎴�
+     * 绗簩娆′慨鏀瑰悗锛�
+     * 鎵ц鐢ㄦ椂 : 1 ms, 鍦≧emove Element鐨凧ava鎻愪氦涓嚮璐ヤ簡99.59% 鐨勭敤鎴�
+     * 鍐呭瓨娑堣�� : 35 MB, 鍦≧emove Element鐨凧ava鎻愪氦涓嚮璐ヤ簡86.60% 鐨勭敤鎴�
+     * 绗笁娆′慨鏀瑰悗锛�
+     * 鎵ц鐢ㄦ椂 : 1 ms, 鍦≧emove Element鐨凧ava鎻愪氦涓嚮璐ヤ簡99.59% 鐨勭敤鎴�
+     * 鍐呭瓨娑堣�� : 34 MB, 鍦≧emove Element鐨凧ava鎻愪氦涓嚮璐ヤ簡100.00% 鐨勭敤鎴�
+     * @param nums
+     * @param val
+     * @return
+     */
+    public int removeElement(int[] nums, int val) {
+        int l = 0;
+        int temp;
+        for (int i=0; i<nums.length; i++) {
+            if (nums[i] != val) {
+                temp = nums[i];
+                nums[i] = nums[l];
+                nums[l] = temp;
+                l++;
+            }
+        }
+        return l;
+    }
+
+    public static void main(String[] args) {
+        RemoveElement removeElement = new RemoveElement();
+        int[] nums = {0,1,2,2,3,0,4,2};
+        int val = 2;
+        System.out.println("鏁扮粍闀垮害锛�" + removeElement.removeElement(nums, val));
+        for (int i : nums
+             ) {
+            System.out.println(i);
+        }
+    }
+
+}
diff --git a/src/main/java/ValidParentheses/ZHANGJIKAI5/ValidParentheses.java b/src/main/java/ValidParentheses/ZHANGJIKAI5/ValidParentheses.java
new file mode 100644
index 0000000..be4769c
--- /dev/null
+++ b/src/main/java/ValidParentheses/ZHANGJIKAI5/ValidParentheses.java
@@ -0,0 +1,97 @@
+package ValidParentheses.ZHANGJIKAI5;
+
+import java.util.HashMap;
+import java.util.LinkedList;
+import java.util.Map;
+
+/**
+ * author锛歓HANGJIKAI5
+ * 棰樼洰锛�20. Valid Parentheses
+ * 瑙ｉ鎬濊矾锛�
+ */
+public class ValidParentheses {
+
+    /**
+     * 绗竴娆℃墽琛岋細
+     * 鎵ц鐢ㄦ椂 : 6 ms, 鍦╒alid Parentheses鐨凧ava鎻愪氦涓嚮璐ヤ簡76.53% 鐨勭敤鎴�
+     * 鍐呭瓨娑堣�� : 33.7 MB, 鍦╒alid Parentheses鐨凧ava鎻愪氦涓嚮璐ヤ簡93.11% 鐨勭敤鎴�
+     * 绗簩娆℃墽琛岋細
+     * 鎵ц鐢ㄦ椂 : 5 ms, 鍦╒alid Parentheses鐨凧ava鎻愪氦涓嚮璐ヤ簡84.74% 鐨勭敤鎴�
+     * 鍐呭瓨娑堣�� : 33.7 MB, 鍦╒alid Parentheses鐨凧ava鎻愪氦涓嚮璐ヤ簡92.63% 鐨勭敤鎴�
+     * 绗笁娆℃墽琛岋細
+     * 鎵ц鐢ㄦ椂 : 4 ms, 鍦╒alid Parentheses鐨凧ava鎻愪氦涓嚮璐ヤ簡92.03% 鐨勭敤鎴�
+     * 鍐呭瓨娑堣�� : 34.1 MB, 鍦╒alid Parentheses鐨凧ava鎻愪氦涓嚮璐ヤ簡87.89% 鐨勭敤鎴�
+     * 绗洓娆℃墽琛岋細
+     * 鎵ц鐢ㄦ椂 : 4 ms, 鍦╒alid Parentheses鐨凧ava鎻愪氦涓嚮璐ヤ簡92.03% 鐨勭敤鎴�
+     * 鍐呭瓨娑堣�� : 33.6 MB, 鍦╒alid Parentheses鐨凧ava鎻愪氦涓嚮璐ヤ簡93.88% 鐨勭敤鎴�
+     *
+     * 鎵ц鐢ㄦ椂 : 3 ms, 鍦╒alid Parentheses鐨凧ava鎻愪氦涓嚮璐ヤ簡96.83% 鐨勭敤鎴�
+     * 鍐呭瓨娑堣�� : 33.4 MB, 鍦╒alid Parentheses鐨凧ava鎻愪氦涓嚮璐ヤ簡97.20% 鐨勭敤鎴�
+     * @param s
+     * @return
+     */
+    public boolean isValid(String s) {
+        char[] chars = s.toCharArray();
+        LinkedList<Character> list = new LinkedList<Character>();
+        if (chars.length > 0) {
+            Map<Character, Character> all = new HashMap(chars.length);
+            all.put(')', '(');
+            all.put('}', '{');
+            all.put(']', '[');
+            for (char c : chars) {
+                if ('(' == c || '{' == c || '[' == c) {
+                    list.add(c);
+                } else {
+                    if (list.size() <= 0) {
+                        return false;
+                    }
+                    // 绗笁鍥涙鎵ц
+                    if (list.getLast() != all.get(c)) {
+                        return false;
+                    } else {
+                        list.removeLast();
+                    }
+                    // 绗竴浜屾鎵ц
+                    /*if (')' == c) {
+                        if ('(' != list.getLast()) {
+                            return false;
+                        } else {
+                            list.removeLast();
+                        }
+                    } else if ('}' == c) {
+                        if ('{' != list.getLast()) {
+                            return false;
+                        } else {
+                            list.removeLast();
+                        }
+                    } else if (']' == c) {
+                        if ('[' != list.getLast()) {
+                            return false;
+                        } else {
+                            list.removeLast();
+                        }
+                    }*/
+                }
+            }
+        }
+        if (list.size() == 0) {
+            return true;
+        }
+        return false;
+    }
+
+    public static void main(String[] args) {
+        ValidParentheses validParentheses = new ValidParentheses();
+        String s1 = "([)]";
+        String s2 = "()[]{}";
+        String s3 = "]";
+        String s4 = "[";
+        System.out.println("s1:" + validParentheses.isValid(s1));
+        System.out.println("s2:" + validParentheses.isValid(s2));
+        System.out.println("s3:" + validParentheses.isValid(s3));
+        System.out.println("s4:" + validParentheses.isValid(s4));
+
+
+    }
+
+}
diff --git a/src/main/java/ValidParenthesisString/ZHANGJIKAI5/ValidParenthesisString.java b/src/main/java/ValidParenthesisString/ZHANGJIKAI5/ValidParenthesisString.java
new file mode 100644
index 0000000..393ff45
--- /dev/null
+++ b/src/main/java/ValidParenthesisString/ZHANGJIKAI5/ValidParenthesisString.java
@@ -0,0 +1,29 @@
+package ValidParenthesisString.ZHANGJIKAI5;
+
+/**
+ * author锛歓HANGJIKAI5
+ * 棰樼洰锛�678. Valid Parenthesis String
+ * 瑙ｉ鎬濊矾锛�
+ */
+public class ValidParenthesisString {
+
+    public boolean checkValidString(String s) {
+        char[] chars = s.toCharArray();
+
+
+
+
+
+        return false;
+    }
+
+    public static void main(String[] args) {
+        ValidParenthesisString validParenthesisString = new ValidParenthesisString();
+        String s1 = "(*))";
+        String s2 = "(*)";
+        System.out.println("s1:" + validParenthesisString.checkValidString(s1));
+        System.out.println("s2:" + validParenthesisString.checkValidString(s2));
+
+    }
+
+}