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, reverse the list, and return the reversed list.
Example
head = [1, 2, 3, 4, 5] → [5, 4, 3, 2, 1]
Constraints
0 ≤ list length ≤ 5000 · −5000 ≤ Node.val ≤ 5000
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Explain the problem in your own words
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