Which edge case matters for this problem?
Practice this question from Merge K Sorted Lists - Min-Heap Multiway Merge Pattern Practice Quiz, with options and an explanation.
Question
Which edge case matters for this problem?
Option A — Correct answer
Null list heads must not be pushed.
Option B
Whether the graph is connected
Option C
Whether a string has vowels
Option D
Whether a matrix is square
Explanation
Null list heads must not be pushed.