CountDistinct

可用

Counts the number of distinct elements in a list.

形式

CountDistinct[list]

CountDistinct[list, test]

验证过的示例CountDistinct[{1, 2, 2, 3, 3, 3}] → 3 CountDistinct[{1, 2, 4}, Abs[#1 - #2] < 2 &] → 2

在 Qurak 上运行搜索参考

主题

List Manipulation - Math & Counting Operations »
Mathematical And Counting Operations On Lists - Multidimensional Arrays
New In100 Alphabetical Listing - C
Summary Of New Features In140 - Core Language
Summary Of New Features In140 - Core Language

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