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945. Minimum Increment to Make Array Unique

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Description

Given an array of integers A, a move consists of choosing any A[i], and incrementing it by 1.

Return the least number of moves to make every value in A unique.

 

Example 1:

Input: [1,2,2]

Output: 1

Explanation:  After 1 move, the array could be [1, 2, 3].

Example 2:

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.

 

Note:

1. 0 <= A.length <= 40000
2. 0 <= A[i] < 40000

 

Solutions

Python3

Java

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