Java Interview Questions · interview question
When should a Java developer choose Adjacency List vs Adjacency Matrix deliberately?
Multiple choiceMediumjava-interview-2026interviewjavause
Answer and explanation
Correct answer
C. Choose an adjacency list for most interview graph problems unless the graph is dense or direct edge lookup dominates.
Why
Choose an adjacency list for most interview graph problems unless the graph is dense or direct edge lookup dominates. Interviewers often ask this to see whether you can connect the concept to real design decisions.
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