Intermediate
Java
Q48 / 100
What is the difference between HashMap and TreeMap?
Correct! Well done.
Incorrect.
The correct answer is B) HashMap is unordered O(1) operations; TreeMap maintains sorted key order with O(log n) operations
B
Correct Answer
HashMap is unordered O(1) operations; TreeMap maintains sorted key order with O(log n) operations
Explanation
HashMap uses hashing for O(1) average performance but no order. TreeMap uses a Red-Black Tree, keeping keys sorted but at O(log n) cost.
Progress
48/100