Can a hashmap have duplicate keys?
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How do you sort an array in decreasing order?
What is a 2 dimensional array?
State the difference between queues and linked lists?
List the limitations of linear probing?
Which sorting algorithm is the slowest?
Can arraylist be empty?
Describe the merge sort principle and what will be its time complexity?
What is difference between list set and map?
What is the difference between for and foreach loop?
Explain quick sort and merge sort algorithms.
Describe stack operation.
What is a stable sort?