From a62ddd7b8f2072afd280f28b90cfc974c043bea1 Mon Sep 17 00:00:00 2001
From: chayan das <dasshuvo817@gmail.com>
Date: Mon, 14 Jul 2025 13:49:18 +0530
Subject: [PATCH] Create 1290. Convert Binary Number in a Linked List to
 Integer

---
 ... Binary Number in a Linked List to Integer | 27 +++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 1290. Convert Binary Number in a Linked List to Integer

diff --git a/1290. Convert Binary Number in a Linked List to Integer b/1290. Convert Binary Number in a Linked List to Integer
new file mode 100644
index 0000000..de75f19
--- /dev/null
+++ b/1290. Convert Binary Number in a Linked List to Integer	
@@ -0,0 +1,27 @@
+/**
+ * Definition for singly-linked list.
+ * struct ListNode {
+ *     int val;
+ *     ListNode *next;
+ *     ListNode() : val(0), next(nullptr) {}
+ *     ListNode(int x) : val(x), next(nullptr) {}
+ *     ListNode(int x, ListNode *next) : val(x), next(next) {}
+ * };
+ */
+class Solution {
+public:
+    int getDecimalValue(ListNode* head) {
+        int result = 0;  // Initialize result to store decimal value
+        
+        // Traverse the linked list from head to tail
+        while (head != nullptr) {
+            // Shift result left by 1 bit (multiply by 2) and add current bit
+            result = result * 2 + head->val;
+            
+            // Move to the next node
+            head = head->next;
+        }
+        
+        return result;  // Return the final decimal value
+    }
+};