使用计数列出数组重复项 [英] List array duplicates with count

问题描述

我有一个包含以下结果的数组

I have an array which contains the following results

red 
red
red
blue
blue
Green
White
Grey

我想获得数组的每个值的重复计数，例如:

and I want to get duplicate count of every value of array, for example:

red    Count=3
blue   Count=2
Green  Count=1
White  Count=1
Grey   Count=1

推荐答案

LINQ 让这一切变得简单:

LINQ makes this easy:

Dictionary<string, int> counts = array.GroupBy(x => x)
                                      .ToDictionary(g => g.Key,
                                                    g => g.Count());

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