solves convert binary number in linked list ti integer

Author: anishLearnsToCode

README.md

@@ -332,7 +332,7 @@
 | 1275 | [Find Winner On a Tic Tac Toe Game](https://leetcode.com/problems/find-winner-on-a-tic-tac-toe-game)                                                 |                                                       [![Java](assets/java.png)](src/FindWinnerOnATicTacToeGame.java)                                                       |                                                                                                                                   |
 | 1281 | [Subtract the Product and Sum of Digits of a Integer](https://leetcode.com/problems/subtract-the-product-and-sum-of-digits-of-an-integer)            |                                              [![Java](assets/java.png)](src/SubtractTheProductAndSumOfDigitsOfAnInteger.java)                                               |                                                                                                                                   |
 | 1287 | [Element Appearing More Than 25% in Sorted Array](https://leetcode.com/problems/element-appearing-more-than-25-in-sorted-array)                      |                                             [![Java](assets/java.png)](src/ElementAppearingMoreThan25PercentInSortedArray.java)                                             |                                                                                                                                   |
-| 1290 | [Convert Binary Number In A Linked List to Integer](https://leetcode.com/problems/convert-binary-number-in-a-linked-list-to-integer)                 |                                                                                                                                                                             |                                                                                                                                   |
+| 1290 | [Convert Binary Number In A Linked List to Integer](https://leetcode.com/problems/convert-binary-number-in-a-linked-list-to-integer)                 |                                                [![Java](assets/java.png)](src/ConvertBinaryNumberInLinkedListToInteger.java)                                                |                                                                                                                                   |
 | 1295 | [Find Numbers With Even Numbers of Digits](https://leetcode.com/problems/find-numbers-with-even-number-of-digits)                                    |                                                                                                                                                                             |                                                                                                                                   |
 | 1299 | [Replace Elements With Greatest Element on Right Side](https://leetcode.com/problems/replace-elements-with-greatest-element-on-right-side)           |                                                                                                                                                                             |                                                                                                                                   |
 | 1304 | [Find N Unique Integers Sum Up To Zero](https://leetcode.com/problems/find-n-unique-integers-sum-up-to-zero)                                         |                                                                                                                                                                             |                                                                                                                                   |

src/ConvertBinaryNumberInLinkedListToInteger.java

@@ -0,0 +1,20 @@
+public class ConvertBinaryNumberInLinkedListToInteger {
+    public int getDecimalValue(ListNode head) {
+        int value = 0;
+        while (head != null) {
+            value <<= 1;
+            value += head.val;
+            head = head.next;
+        }
+        return value;
+    }
+
+
+     private static class ListNode {
+        int val;
+        ListNode next;
+        ListNode() {};
+        ListNode(int val) { this.val = val; }
+         ListNode(int val, ListNode next) { this.val = val; this.next = next; }
+    }
+}