LC#876 returns middle node of linkedlist

Author: NirmalSilwal

Leetcode/leetcodeTags/LinkedList/MiddleOfLinkedList876.java

@@ -0,0 +1,52 @@
+package LinkedList;
+
+public class MiddleOfLinkedList876 {
+
+	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;
+		}
+	}
+
+	public ListNode middleNode(ListNode head) {
+		ListNode temp = head;
+		int length = 1;
+
+		while (temp.next != null) {
+			temp = temp.next;
+			length++;
+		}
+		int count = 0;
+		ListNode temp2 = head;
+
+		while (count < length / 2) {
+			temp2 = temp2.next;
+			count++;
+		}
+		return temp2;
+	}
+
+	// 2nd approach
+	public ListNode middleNode2(ListNode head) {
+		ListNode slow = head;
+		ListNode fast = head;
+
+		while (fast != null && fast.next != null) {
+			slow = slow.next;
+			fast = fast.next.next;
+		}
+
+		return slow;
+	}
+}