Watch 10 video solutions for Next Greater Node In Linked List, a medium level problem involving Array, Linked List, Stack. This walkthrough by take U forward has 265,567 views views. Want to try solving it yourself? Practice on FleetCode or read the detailed text solution.
You are given the head of a linked list with n nodes.
For each node in the list, find the value of the next greater node. That is, for each node, find the value of the first node that is next to it and has a strictly larger value than it.
Return an integer array answer where answer[i] is the value of the next greater node of the ith node (1-indexed). If the ith node does not have a next greater node, set answer[i] = 0.
Example 1:
Input: head = [2,1,5] Output: [5,5,0]
Example 2:
Input: head = [2,7,4,3,5] Output: [7,0,5,5,0]
Constraints:
n.1 <= n <= 1041 <= Node.val <= 109