In class livecode

src/ListNode.java

@@ -1,3 +1,4 @@
 public class ListNode {
-
+    public char data;
+    public ListNode next;
 }

src/Practice.java

@@ -1,5 +1,77 @@
 public class Practice {
     public static void main(String[] args) {
+        ListNode myNode = new ListNode();
+        myNode.data = 'x';
 
+        ListNode anotherNode = new ListNode();
+        anotherNode.data = 't';
+
+        myNode.next = anotherNode;
+
+        ListNode moreNode = new ListNode();
+        moreNode.data = 'r';
+
+        anotherNode.next = moreNode;
+
+        ListNode coolNode = new ListNode();
+        coolNode.data = 'w';
+        coolNode.next = myNode;
+
+        ListNode extra = moreNode;
+        moreNode.data = 'e';
+
+        ListNode hello = new ListNode();
+        hello.data = 'x';
+        extra.next = hello;
+
+        //printList(coolNode);
+        //System.out.println(countX(coolNode));
+
+        ListNode newHead = removeAt(coolNode, 0);
+        printList(newHead); 
+
+    }
+
+    public static void printList(ListNode head) {
+        ListNode current = head;
+
+        while (current != null) {
+            System.out.println(current.data);
+            current = current.next;
+        }
+    }
+
+    // Count how many nodes hold an x
+    public static int countX(ListNode head) {
+        ListNode current = head;
+        int xCount = 0;
+
+        while (current != null) { 
+            if (current.data == 'x') {
+                xCount++;
+            }
+            current = current.next;
+        }
+
+        return xCount;
+
+    }
+
+//remove the node at removeIndex, and return the head of the list. 
+//example:
+//e -> t -> k -> y -z
+//removeIndex 2
+//
+    public static ListNode removeAt(ListNode head, int removeIndex){
+        if(removeIndex==0){
+            return head.next;
+        }
+        ListNode current = head; 
+        for(int i=0; i < removeIndex - 1 ;i++){
+            current = current.next;
+        }
+        current.next = current.next.next;
+
+    return head; 
     }
 }