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LinkedList

Intersection of Two Linked Lists

**Problem Statement:** Given the required input arguments, write an efficient algorithm to solve the **Intersection of Two Linked Lists** problem. Implement the required logic as specified by standard definitions for this classic algorithmic challenge. **Hint / Expected Approach:** Two-pointer length equalization trick **Edge Cases to Consider:** - (1) No intersection - (2) Same list - (3) Lists of different lengths

Examples

Example 1
Input: A=[4,1,8,4,5], B=[5,6,1,8,4,5], intersect at node 8
Output: Node with value 8
Explanation: Standard intersection
Example 2
Input: A=[1,9,1,2,4], B=[3,2,4], intersect at node 2
Output: Node with value 2
Explanation: Different lengths
Example 3
Input: A=[2,6,4], B=[1,5], no intersection
Output: null
Explanation: No intersection

Constraints

  • ▪The number of nodes in the list is in the range [0, 500]
  • ▪-100 <= Node.val <= 100
  • ▪Solve in-place without copying node structures

Watch Out For Edge Cases

  • ▪No intersection
  • ▪Same list
  • ▪Lists of different lengths
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