Search⌘ K
AI Features
Home
Courses
Grokking the Coding Interview Patterns

Solution: Intersection of Two Linked Lists

Understand how to determine the intersection node of two singly linked lists by applying the two-pointer approach. This lesson guides you through aligning traversal paths without calculating list lengths, ensuring efficient detection of the shared node or returning null if no intersection exists.

We'll cover the following...

Statement

You are given the heads of two singly linked lists, headA and headB, to determine whether the two lists intersect. If they intersect, return the node where the intersection begins. Otherwise, return NULL.

Note: Linked lists intersect if they share a common node in memory, not just a node with the same value.

Constraints:

  • 1≤1 ≤ node.val ≤105≤ 10^5

  • The number of nodes of listAlistA is in the mm ...