using System;
public class Test
{
public static void Main()
{
// your code goes here
String desc = "Hello World A12B1";
String[] arrDesc = desc.Split(' ');
foreach (String s in arrDesc)
{
int count = 0;
int i = 0;
while(i<s.Length)
{
//Console.WriteLine(i);
if (Char.IsDigit(s[i]))
{
while(i < s.Length && Char.IsDigit(s[i]))
{
i++;
count++;
}
if (count == 10 || count == 11)
{
Console.WriteLine("True");
}
//Console.WriteLine(i);
count = 0;
}
else
{
i++;
}
}
}
Console.WriteLine("False");
}
}
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