初學者問題
int[] a = { 3, 4, 3, 8, 9, 22, 44, 1, 5, 66, 11, 16, 21, 22, 2, 55, 99, 26, 29, 11, 3, 22, 62, 69, 72, 79, 22 };如何統計有那些數字是重複?
還有把重複的資料剔除? --------------------编程问答-------------------- 除 --------------------编程问答-------------------- int[] a = { 3, 4, 3, 8, 9, 22, 44, 1, 5, 66, 11, 16, 21, 22, 2, 55, 99, 26, 29, 11, 3, 22, 62, 69, 72, 79, 22 };
Console.WriteLine("重复的数");
a.GroupBy(t => t).Where(t => t.Count() > 1).Select(t => t.Key).ToList().ForEach(t => Console.WriteLine(t));
//去除重复的数
a = a.Distinct().ToArray();
--------------------编程问答--------------------
--------------------编程问答-------------------- 謝謝啊.....
int[] a = { 3, 4, 3, 8, 9, 22, 44, 1, 5, 66, 11, 16, 21, 22, 2, 55, 99, 26, 29, 11, 3, 22, 62, 69, 72, 79, 22 };
//Lambda表达式
var result = a.GroupBy(c => c).Where(d => d.Count() > 1).OrderBy(c=>c.Key);
//LINQ
var result1 = from u in a
group u by u into temp
where temp.Count()>1
orderby temp.Key
select new
{
temp.Key,
Count = temp.Count()
};
foreach (var item in result)
Console.WriteLine(item.Key + " " + "Count=" + item.Count());
foreach (var item in result1)
Console.WriteLine(item.Key + " " + "Count=" + item.Count);
补充：.NET技术 , C#
