【Python】Codility in Python : Lesson 6 - Sorting【Distinct】

Sorting 第一題：【Distinct】
Compute number of distinct values in an array.

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Write a function

　　def solution(A)

that, given a zero-indexed array A consisting of N integers,
returns the number of distinct values in array A.

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方法一：直接取 set 長度的簡易方法
Correctness：100%、Performance：100%
```python def solution(A): return len(set(A)) ```

完整練習題 source code 請參閱：github