C＃动态计数列表中的出现次数

Question

I have a List<String> Fruits that stores a list of fruits the user enters.

For example Fruits = {"Apple", "Banana", "Apple", "Orange"}

I would like to count the number of occurrences of each fruit.

How do I go about this? I come from a python background, and to solve this I would use dictionary. Any hints would be greatly appreciated

Answer 1

You may GroupBy the friuit name and take count of each group:

Fruits.GroupBy(x => x).Select(x => new {Name = x.Key, Count = x.Count()});

Live Demo

Answer 2

Utilise GroupBy followed with ToDictionary :

Dictionary<string, int> result = fruits.GroupBy(x => x)
                                       .ToDictionary(x => x.Key, x => x.Count());