擅长:python、mysql、java
<p>基本上根据你提到的要求,我相信你可以在C#:</p>
<pre><code>static string OrderInfo(string order)
{
int len = order.Length; int count;
StringBuilder builder = new StringBuilder();
for(int i=0;i<len;i++)
{
count = 0;
char toSearch = order[i];
foreach(char c in order)
{
if (c == toSearch)
count++;
}
builder.Append("Letter " + order[i] + ": " + count);
}
return builder.ToString();
}
</code></pre>
<p>注:这也包括重复字母。</p>