Why ArrayList is faster than HashSet in java?
1889
How do I write a correct micro-benchmark in Java?
5637
Why is Python's "sorted()" slower than "copy, then .sort()"
122890
How to initialize HashSet values by construction?
66761
Is it costly to do array.length or list.count in a loop
64994
boolean[] vs. BitSet: Which is more efficient?
2573
C# Hashset Contains Non-Unique Objects
113909
Why is Dictionary preferred over Hashtable in C#?
36203
Why isn't ArrayList marked [Obsolete]?
132703
Theoretical limit for number of keys (objects) that can be stored in a HashMap?
111535
Why does the ArrayList implementation use Object[]?
28755
Performance issues with nested loops and string concatenations
15548
Is a Java hashmap search really O(1)?
90867
The performance impact of using instanceof in Java
47701
Why is string concatenation faster than array join?
152371
equals vs Arrays.equals in Java
66048
Type List vs type ArrayList in Java
15113
How to use an array list in Java?