Create remove nth node leetcode 19

RemoveNthNode.java

@@ -0,0 +1,28 @@
+/**
+ * Definition for singly-linked list.
+ * public class ListNode {
+ *     int val;
+ *     ListNode next;
+ *     ListNode() {}
+ *     ListNode(int val) { this.val = val; }
+ *     ListNode(int val, ListNode next) { this.val = val; this.next = next; }
+ * }
+ */
+class RemoveNthNode {
+    public ListNode removeNthFromEnd(ListNode head, int n) {
+        ListNode fast=head;
+        ListNode slow=head;
+        for(int i=0;i<n;i++){
+            fast=fast.next;
+        }
+        if(fast==null){
+            return head.next;
+        }
+        while(fast.next!=null){
+            fast=fast.next;
+            slow=slow.next;
+        }
+        slow.next=slow.next.next;
+        return head;
+    }
+}