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  1. using System;
  2.  
  3. public class Test
  4. {
  5. 	public static void Main()
  6. 	{
  7. 		Console.WriteLine("#1: " + numberOne() + " times");
  8. 		Console.WriteLine("#2: " + numberTwo() + " mph");
  9. 		Console.WriteLine("#3: " + numberThree() + " cm^2");
  10. 	}
  11.  
  12. 	public static int numberOne()
  13. 	{
  14. 		int count = 0;
  15. 		for (int i = 1; i <= 150; i++)
  16. 		{
  17. 			count += (i + "").Split('3').Length - 1;
  18. 		}
  19. 		return count;
  20. 	}
  21.  
  22. 	public static double numberTwo()
  23. 	{
  24. 		int start = 15952;
  25. 		string num, rev;
  26. 		while (true)
  27. 		{
  28. 			num = start + "";
  29. 			char[] arr = num.ToCharArray();
  30. 			Array.Reverse(arr);
  31. 			rev = new string(arr);
  32. 			if (num.Equals(rev))
  33. 			{
  34. 				break;
  35. 			}
  36. 			start++;
  37. 		}
  38. 		//average speed in mph
  39. 		return (start - 15951)/2.0;
  40. 	}
  41.  
  42. 	public static double numberThree()
  43. 	{
  44. 		//Not really a programming question
  45. 		//64-7=57 identical cubes with total volume of 1539 cm^3
  46. 		double vol_per_cube = 1539.0/57; //volume per cube
  47. 		//Volume for cube: s^3
  48. 		double sidelength = Math.Pow(vol_per_cube, 1.0/3);
  49. 		//side length^
  50. 		sidelength = sidelength * 4; //side length of the entire cube
  51. 		//it's 4 because: 64 total cubes, 4 (horizontal) * 4 (vertical) * 4 (3d-z-tal-thing) = 64
  52. 		//surface area of cube: 6s^2
  53. 		return 6 * Math.Pow(sidelength, 2);
  54. 	}
  55. }
Success #stdin #stdout 0.03s 33896KB
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Standard input is empty
stdout
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#1: 35 times
#2: 55 mph
#3: 864 cm^2
https://ideone.com/kqs7Kp
language:
C# (gmcs 5.20.1)
created:
11 years ago
visibility:
public

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