// Created an ans Array, whose length is equal to the length of nums Array // i.e. no of elements in nums Array is equal to the no of elements in ans Array ...

// A permutation of an array of integers is an arrangement of its members into a sequence or linear order. // For example, for arr = [1,2,3], the following are considered permutations of arr: [1,2,3], ...

Community driven content discussing all aspects of software development from DevOps to design patterns. Here are the most important concepts developers must know when they size Java arrays and deal ...