Flattening Linked List Problem

Flattening Linked List Problem — ExecCode Easy DSA Practice

Solve the Flattening Linked List problem on ExecCode. Free online easy DSA practice in Linked List. Write and run code in Java, C++, Python — no signup required to run.

Problem description

Description You are given the input needed to solve Flattening Linked List. Your task is to compute the required answer and return flattened -> chain ending in NULL. A number or sequence is stored node by node. In Flattening Linked List, each step must preserve the order of nodes while solving the required operation. data: multiline list diagram.

Examples

Input {"data": "1->2->NULL\n|\n3->4->NULL"}; Output 1->2->3->4->NULL. Input {"data": "1->NULL\n|\n2->NULL\n|\n3->NULL"}; Output 1->2->3->NULL. Input {"data": "1->2->3->NULL"}; Output 1->2->3->NULL

Constraints

Total nodes <= 10^4

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