Given a singly linked list and a number k, you are required to complete the function modularNode() which returns the modular node of the linked list.
A modular node is the last node of the linked list whose Index is divisible by the number k, i.e. i%k==0. Note: If no such node is available, return -1.
Example 1:
Input:LinkedList: 1->2->3->4->5->6->7
k = 3
Output: 6
Explanation: Node from the last with
index divisible by 3 is 6
Example 2:
Input:LinkedList: 19->28->37->46->55k = 2
Output: 46
Explanation: Node from the last with
index divisible by 2 is 46
Your Task:
You don't need to read input or print anything. Complete the function modularNode() which takes the head Node and integer k as input parameters and returns the modular Node, if exists, -1 otherwise.
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Avoid using static/global variables in coding problems as your code is tested
against multiple test cases and these tend to retain their previous values.
Passing the Sample/Custom Test cases in coding problems does not guarantee the
correctness of code. On submission, your code is tested against multiple test cases
consisting of all possible corner cases and stress constraints.
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