Answers for "You are given an array A of N elements. You have to make all elements unique, to do so in one step you can increase any number by one."

You are given an array A of N elements. You have to make all elements unique, to do so in one step you can increase any number by one.

Input: nums = [3,2,1,2,1,7]
Output: 6
Explanation:  After 6 moves, the array could be [3, 4, 1, 2, 5, 7].
It can be shown with 5 or less moves that it is impossible for the array to have all unique values.