Hello, for my lab in my programming class we were to follow a tutorial on how to write a password detection program, however we have to re-write the foreach loops as for loops. I would greatly appreciate any help that could be given

The language is Visual C# .NET (We are coding in visual studio 2017)

private int NumberDigits(string str) { int digits = 0; // The number of digits // Count the digits in str. foreach (char ch in str) { if (char.IsDigit(ch)) { digits++; } } // Return the number of digits. return digits; }