Question

C#如何用统计数组中相同元素个数

如数组string[] value = ｛“DFF11”，“DFF11”，“RFF11”，“RFF11”，“RFF11”，“CFF11”｝如何统计相同元素的个数。

Answer 1

string[] value = new string[] { "DFF11", "DFF11", "RFF11", "RFF11", "RFF11", "CFF11" };
var source = value.GroupBy(t => t.Trim()).Select(t => new { count = t.Count(), key = t.Key }).ToArray();
foreach (var s in source)
Console.WriteLine(s.key + ":" + s.count);