NOTE : No 2 entries in the permutation sequence should be the same. Warning : DO NOT USE LIBRARY FUNCTION FOR GENERATING PERMUTATIONS. Example : next_permutations in C++ / itertools.permutations in ...

// 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 ...

Abstract: A frequency permutation array (FPA) of length n = m¿ and distance d is a set of permutations on a multiset over m symbols, where each symbol appears exactly ¿ times and the distance between ...