How to Solve Merge Nodes in Between Zeros Problem
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Merge Nodes in Between Zeros
You are given the head of a linked list, which contains a series of integers separated by 0's. The beginning and end of the linked list will have Node.val == 0. For every two consecutive 0's, merge al...
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Understanding the Merge Nodes in Between Zeros Problem
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Problem Statement
You are given the head of a linked list, which contains a series of integers separated by 0's. The beginning and end of the linked list will have Node.val == 0. For every two consecutive 0's, merge all the nodes lying in between them into a single node whose value is the sum of all the merged nodes. The modified list should not contain any 0's. Return the head of the modified linked list.
Merge Nodes in Between Zeros
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Examples
head = [0,3,1,0,4,5,2,0][4,11]The above figure represents the given linked list. The modified list contains - The sum of the nodes marked in green: 3 + 1 = 4. - The sum of the nodes marked in red: 4 + 5 + 2 = 11.
head = [0,1,0,3,0,2,2,0][1,3,4]The above figure represents the given linked list. The modified list contains - The sum of the nodes marked in green: 1 = 1. - The sum of the nodes marked in red: 3 = 3. - The sum of the nodes marked in yellow: 2 + 2 = 4.
Constraints
The number of nodes in the list is in the range [3, 2 * 105].0 <= Node.val <= 1000There are no two consecutive nodes with Node.val == 0.The beginning and end of the linked list have Node.val == 0.How Interview Coder Helps with Leetcode Problems
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