нужно, 9 класс информатика ​

class Program

 {

   static void Main(string[] args)

   {

     string src = " Qwy. ... Asdf.. Lkjdfs A.";

     //string dest = ReplaceDots(src, '.', '…', 3);

     string dest = ReplaceDots(src, '.', "...", 3);

     Console.WriteLine("src:\t" + src);

     Console.WriteLine("dest:\t" + dest);

     Console.WriteLine();

     Console.Write("Press any key for exit ...");

     Console.ReadKey(true);

   }

   //private static string ReplaceDots(string src, char dotCh, char dots, int minDotsCount)

   private static string ReplaceDots(string src, char dotCh, string dots, int minDotsCount)

   {

     StringBuilder dest = new StringBuilder();

     int i = 0;

     while (i < src.Length)

     {

       int dotsCount = 0;

       while (i < src.Length && src[i] == dotCh)

       {

         dotsCount++;

         i++;

       }

       if (dotsCount >= minDotsCount)

         dest.Append(dots);

       else if (dotsCount == 0)

         dest.Append(src[i++]);

       else

         while (dotsCount-- > 0)

           dest.Append(dotCh);

     }

     return dest.ToString(); ;

   }

 }

list = []

while True:

   n = int(input("nb: "))

   if n == 0:

       break

   list.append(n)

res = 1

sum = sum(list)

for x in list:

   if x * x > sum:

       res *= x

print(res)

def isPerfectSquare(num):

   s = int(num**0.5)

   return s * s == num

def isFibonacciNumber(n):

   return isPerfectSquare(5 * n * n + 4) or isPerfectSquare(5 * n * n - 4)

list = []

while True:

   n = int(input('nb : '))

   if n % 2:

       odd = n

       break

   list.append(n)

if isFibonacciNumber(n):

   print([x for x in list if not(x % 3)])

else:

   print([x for x in list if not(x % 5)])

list = []

N = int(input('N = '))

for i in range(N):

   n = int(input('nb : '))

   list.append(n)

print(sum([x for x in list if x * x % 10 == 9]))