Community driven content discussing all aspects of software development from DevOps to design patterns. It’s easy to remove duplicates from a list in Java. There are a variety of functions in Java ...

There are several ways to find duplicates in a Java List, array or other collection class. The following list describes some of the most commonly used approaches: Use a method in the Java Streams API ...

A (possibly pedantic) lint for iterating over a HashSet/HashMap would be appreciated. Given these do not stable iteration orders across program instances, any usage of them in redundant systems may ...

Hello, I am on the Visual Studio performance team and our telemetry has shown that there are high amounts of CPU being consumed by the two callstacks I pasted below. It appears that there are multiple ...

Let's say I have no more than a few hundred UUIDs, the set of which will only be updated rarely. Let's furthermore say I want to, at runtime, check if an arbitrary UUID belongs to said predefined set.

A HashSet is an optimized collection of unordered, unique elements that provides fast lookups and high-performance set operations. The HashSet class was first introduced in .NET 3.5 and is part of the ...

In c#, HashSet is a disjoint group of an unique elements. We can a apply a multiple operation on HashSet such as Add, Remove, Contains etc. HashSet is also allow to apply a standard set of operations ...

It extends AbstractList class and implements List interface. It uses hashing technique to store data. It contains only unique elements. We can use HashSet class by importing java.util package. import ...