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C# Are there three (without converting to string)

Code
Diff
  • using System;

public class Kumite {
  public static bool IsThree(int number) {
    var digitToSearch = 3;
    var amountOfDigits = (int)Math.Log10(number); 
    
    for (int i = 0; i <= amountOfDigits; i++)
    {
        var divisor = (int)Math.Pow(10, i);
        var truncate = number / divisor;
        var digit = truncate % 10;
        if (digit == digitToSearch)
        {
            return true;
        }
    }
    return false;
  }
}
    • using System;
    • public class Kumite {
    • public static bool IsThree(int x) =>
    • x.ToString().Contains('3');
    • public static bool IsThree(int number) {
    • var digitToSearch = 3;
    • var amountOfDigits = (int)Math.Log10(number);
    • for (int i = 0; i <= amountOfDigits; i++)
    • {
    • var divisor = (int)Math.Pow(10, i);
    • var truncate = number / divisor;
    • var digit = truncate % 10;
    • if (digit == digitToSearch)
    • {
    • return true;
    • }
    • }
    • return false;
    • }
    • }