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Leetcode Problem 160. Intersection of Two Linked Lists
160. Intersection of Two Linked Lists
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Leetcode Solutions
Two Pointers Approach
Solution Idea
Algorithm Steps
Code Implementation
Complexity Analysis
Initialize two pointers,
pA
and
pB
, to the heads of
headA
and
headB
respectively.
Traverse the lists with these pointers simultaneously.
When
pA
reaches the end of list A, redirect it to the head of list B. Do the same for
pB
when it reaches the end of list B.
If at any point
pA
and
pB
meet, return the node as the intersection.
If no intersection is found by the time both pointers have traversed both lists (i.e., both are null), return null.
Hash Table Approach
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