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Medium 💻 Coding

[Testing & QA] Reverse Linked List

Problem Statement

Problem Statement for Reverse Linked List under Testing & QA:

Given the head of a singly linked list, reverse the list, and return its reversed list head node.

Input Constraints:
- 1 <= len(nums) <= 10^5
- Elements fit in memory standard spaces.

Proposed Solution

def reverseList(head):
    prev = None
    curr = head
    while curr:
        nxt = curr.next
        curr.next = prev
        prev = curr
        curr = nxt
    return prev

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