Problem of the Day
A new programming or logic puzzle every Mon-Fri

Welcome back to Monday. Hope everyone enjoyed the first week of Sunday football!

Today's problem is to create a function that takes in a number and outputs that digit of pi. For example, if the function received 2 it would output 4.

Comments:

• Anonymous - 10 years, 3 months ago

  today as lambda:

  \x -> mod (pi * 10^x) 10

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• malboy - 10 years, 3 months ago

  This is what I came up with in C#. Probably not the fastest/most efficient method, but whatevs.

          int numUserInput;
          string strUserInput,
              strPiDigits;
          char[] charArrayPiDigits;
  
          Console.WriteLine("Today's problem is to create a function that \n" +
              "takes in a number and outputs that digit of pi. For example, \n" +
              "if the function received 2 it would output 4.");
  
          strUserInput = Console.ReadLine();
          numUserInput = Convert.ToInt32(strUserInput);
  
          strPiDigits = (Math.PI).ToString();
  
          charArrayPiDigits = strPiDigits.ToCharArray();
          Console.WriteLine(charArrayPiDigits[numUserInput + 1]);
  
          Console.ReadLine();
  

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• Anonymous - 10 years, 3 months ago

  int x = int.Parse(Console.ReadLine());
  Console.WriteLine(Math.PI.ToString().Replace(".", "").ToCharArray()[x]);
  

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