Today we are going to talk about a simple but skillfull problem: find duplicate and missing element. It seems to be similar to the previous problem How to Find Missing Elements, but there are some ...

🔍 Duplicate Element Finder This program identifies and returns duplicate elements from an input array. It uses an efficient approach with unordered sets to ensure fast lookups and minimal time ...

An array in Java is a type of variable that can store multiple values. It stores these values based on a key that can be used to subsequently look up that information. Arrays can be useful for ...