Question

我正在尝试制作百分比计算器。我有一个数组，我想看到每个元素出现的次数，然后除以总出现次数得到一个百分比。所以我想要一个输出： * / 1 = 12％ * / 2 = 15％ ...

        int[] n1 = { 1, 2, 3, 4, 5, 6, 1, 2, 4, 5, 6, 3, 1, 2, 5, 6 };

        int c = n1.Count();

        Console.WriteLine ("the total number of " + c );
        Dictionary<int, int> counts = n1.GroupBy (x => x).ToDictionary (g => g.Key, g => g.Count ());

Answer 1

尝试这样的事情：

int[] n1 = { 1, 2, 3, 4, 5, 6, 1, 2, 4, 5, 6, 3, 1, 2, 5, 6 };

int c = n1.Count();

var keyValue = n1.GroupBy (n => n).Select (n=> new KeyValuePair<int,string>(n.Key,((decimal)n.Count()/(decimal)c).ToString("0.0%")));

响应：

Key = 1, Value = 18.8%
Key = 2, Value = 18.8%
Key = 3, Value = 12.5%
Key = 4, Value = 12.5%
Key = 5, Value = 18.8%
Key = 6, Value = 18.8%

嗨，我正在尝试制作百分比计算器。我有一个数组，我想看到每个元素出现的次数

1 个答案: