make all the numbers unique
Input: [1,2,2]
Output: 1
Explanation: After 1 move, the array could be [1, 2, 3].make all the numbers unique
Input: [1,2,2]
Output: 1
Explanation: After 1 move, the array could be [1, 2, 3].make all the numbers unique
Input: [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.Copyright © 2021 Codeinu
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