diff --git a/src/Main.kt b/src/Main.kt
index 911c4b0..e3303b5 100644
--- a/src/Main.kt
+++ b/src/Main.kt
@@ -1,7 +1,4 @@
-
-
-
 fun main() {
-    val t = Test3()
+    val t = Test283()
     t.test()
 }
\ No newline at end of file
diff --git a/src/Test160.kt b/src/Test160.kt
new file mode 100644
index 0000000..ea4a63c
--- /dev/null
+++ b/src/Test160.kt
@@ -0,0 +1,23 @@
+class Test160 {
+    class ListNode(var `val`: Int) {
+        var next: ListNode? = null
+    }
+
+    fun getIntersectionNode(headA: ListNode?, headB: ListNode?): ListNode? {
+        if (headA==null||headB==null){
+            return null
+        }
+        var hA = headA
+        while (hA!=null){
+            var hB = headB
+            while (hB!=null){
+                if (hA==hB){
+                    return hB
+                }
+                hB = hB.next
+            }
+            hA = hA.next
+        }
+        return null
+    }
+}
\ No newline at end of file
diff --git a/src/Test283.kt b/src/Test283.kt
new file mode 100644
index 0000000..d5fc5c3
--- /dev/null
+++ b/src/Test283.kt
@@ -0,0 +1,37 @@
+class Test283 {
+    fun moveZeroes(nums: IntArray): Unit {
+        val size = nums.size;
+        if (size==1) {
+            return
+        }
+        var i = 0;
+        while (i < size-1){
+            if (nums[i]==0){
+                var j = i+1
+                while ( j < size && nums[j]==0 ){
+                    j++
+                }
+                if (j==size){
+                    return
+                }
+                nums[i] = nums[j]
+                nums[j] = 0
+            }
+            i++
+        }
+    }
+
+    fun test(){
+        val array = intArrayOf(0,1,0,3,12)
+        for (i in array){
+            print(i)
+            print(",")
+        }
+        print("\n")
+        moveZeroes(array)
+        for (j in array){
+            print(j)
+            print(",")
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/Test3.kt b/src/Test3.kt
index 059a601..c84668f 100644
--- a/src/Test3.kt
+++ b/src/Test3.kt
@@ -1,8 +1,5 @@
 class Test3 {
 
-    fun lengthOfLongestSubstring(s: String): Int {
-
-    }
 
     fun test(){
 
diff --git a/src/Test49.kt b/src/Test49.kt
new file mode 100644
index 0000000..ea5ec6a
--- /dev/null
+++ b/src/Test49.kt
@@ -0,0 +1,12 @@
+class Test49 {
+
+
+
+    fun groupAnagrams(strs: Array<String>): List<List<String>> {
+        var map = HashMap<Int,Int>() // Index Identifier
+
+
+    }
+
+
+}
\ No newline at end of file