search an element in a Circular Linked List

Java program to search an element in a Circular Linked List

Author: lkmSasanga

search_element_in_Circular_LinkedList.java

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+public class SearchNode {  
+    public class Node{  
+        int data;  
+        Node next;  
+        public Node(int data) {  
+            this.data = data;  
+        }  
+    }  
+  
+    public Node head = null;  
+    public Node tail = null;  
+  
+    public void add(int data){  
+        Node newNode = new Node(data);  
+        if(head == null) {  
+            head = newNode;  
+            tail = newNode;  
+            newNode.next = head;  
+        }  
+        else {  
+            tail.next = newNode;  
+            tail = newNode;  
+            tail.next = head;  
+        }  
+    }  
+  
+    public void search(int element) {  
+        Node current = head;  
+        int i = 1;  
+        boolean flag = false;  
+        if(head == null) {  
+            System.out.println("List is empty");  
+        }  
+        else {  
+             do{  
+                if(current.data ==  element) {  
+                    flag = true;  
+                    break;  
+                }  
+                current = current.next;  
+                i++;  
+            }while(current != head);  
+             if(flag)  
+                 System.out.println("Element is present in the list at the position : " + i);  
+            else  
+                 System.out.println("Element is not present in the list");  
+        }  
+    }  
+  
+    public static void main(String[] args) {  
+        SearchNode cl = new SearchNode();  
+        cl.add(1);  
+        cl.add(2);  
+        cl.add(3);  
+        cl.add(4);  
+        cl.search(2);  
+        cl.search(7);  
+    }  
+}