Solution: Intersection of Two Linked Lists
Understand how to find the intersection point of two singly linked lists by using a two-pointer approach. This lesson teaches you to align traversal paths without computing list lengths explicitly, ensuring an optimal O(N+M) time and O(1) space solution. You will learn to implement pointer redirection to detect if and where two lists intersect in memory, gaining insight into efficient linked list traversal and problem-solving using two pointers.
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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:
node.valThe number of nodes of
is in the ...