Section 1Understand Problem
Section 01
Understand the problem
Restate the problem precisely. Interviewers reward candidates who pause, define the contract, and name the guarantees before coding.
Problem statement
Given the head of a singly linked list, return the middle node of the linked list. If there are two middle nodes, return the second middle node.
Example
head = [1,2,3,4,5] → [3,4,5]
Constraints
1 ≤ list length ≤ 100 · 1 ≤ Node.val ≤ 100
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