PROBLEM OF THE DAY : 03/01/2024 | Decimal Equivalent of Binary Linked List
source link: https://www.geeksforgeeks.org/videos/problem-of-the-day-03012024-decimal-equivalent-of-binary-linked-list/
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Decimal Equivalent of Binary Linked List
Welcome to the daily solving of our PROBLEM OF THE DAY with Karan Mashru. We will discuss the entire problem step-by-step and work towards developing an optimized solution. This will not only help you brush up on your concepts of Linked List but also build up problem-solving skills.
In this problem, we are given a singly linked list of length n. The link list represents a binary number, ie- it contains only 0s and 1s. Find its decimal equivalent.
The significance of the bits decreases with the increasing index in the linked list.
An empty linked list is considered to represent the decimal value 0.
Since the answer can be very large, answer modulo 109+7 should be printed.
Example :
Input:
n = 3
Linked List = {0, 1, 1}
Output:
3
Explanation:
0*22 + 1*21 + 1*20 = 1 + 2 + 0 = 3
Give the problem a try before going through the video. All the best!!!
Problem Link: https://www.geeksforgeeks.org/problems/decimal-equivalent-of-binary-linked-list/1
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