This post shows readers how to create an array in Java. Including: Array Lists, multidimensional arrays, maps, and more.

You have been given an integer array/list (ARR) of size N which contains numbers from 0 to (N - 2). Each number is present at least once. That is, if N = 5, the array/list constitutes values ranging ...

Java Program to find duplicate elements in array - 3 ways to compare time/space complexity Solution 1 : Our first solution is very simple. All we are doing here is to loop over an array and comparing ...