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  1. using System;
  2. using System.Collections.Generic;
  3. using System.Linq;
  4.  
  5. public class Test
  6. {
  7. 	public delegate void IntConsumer(List<int> ints);
  8.  
  9. 	public static void doStuff(List<List<int>> arrays, List<IntConsumer> consumers) {
  10. 		processArrays(arrays, consumers, new List<int>());
  11. 	}
  12.  
  13. 	private static void processArrays(List<List<int>> arrays, List<IntConsumer> consumers, List<int> consumerArgsSoFar) {
  14. 		if(consumers.Count == 0 || arrays.Count == 0) {
  15. 			return;
  16. 		}
  17.  
  18. 		List<int> currentArray = arrays[0];
  19. 		List<List<int>> remainingArrays = arrays.GetRange(1, arrays.Count-1);
  20. 		IntConsumer currentConsumer = consumers[0];
  21. 		List<IntConsumer> remainingConsumers = consumers.GetRange(1, arrays.Count-1);
  22.  
  23. 		if(currentArray.Count == 0) {
  24. 			processArrays(remainingArrays, remainingConsumers, consumerArgsSoFar);
  25. 		} else {
  26. 			for(int i = 0; i < currentArray.Count; i++) {
  27. 				List<int> consumerArgs = new List<int>(consumerArgsSoFar);
  28. 				consumerArgs.Add(currentArray[i]);
  29.  
  30. 				currentConsumer(consumerArgs);
  31.  
  32. 				processArrays(remainingArrays, remainingConsumers, consumerArgs);
  33. 			}
  34. 		}
  35. 	}
  36.  
  37. 	public static void log1(List<int> x) {
  38. 		Console.WriteLine("log1");
  39. 		x.ForEach(Console.Write);
  40. 		Console.WriteLine();
  41. 	}
  42. 	public static void log2(List<int> x) {
  43. 		Console.WriteLine("log2");
  44. 		x.ForEach(Console.Write);
  45. 		Console.WriteLine();
  46. 	}
  47. 	public static void log3(List<int> x) {
  48. 		Console.WriteLine("log3");
  49. 		x.ForEach(Console.Write);
  50. 		Console.WriteLine();
  51. 	}
  52.  
  53. 	public static void Main() {
  54. 		List<int> dim1 = new List<int>(){10, 20, 30};
  55. 		List<int> dim2 = new List<int>(){};
  56. 		List<int> dim3 = new List<int>(){12, 22, 32};
  57.  
  58. 		List<List<int>> arrays = new List<List<int>>(){dim1, dim2, dim3};
  59. 		List<IntConsumer> consumers = new List<IntConsumer>(){log1, log2, log3};
  60.  
  61. 		doStuff(arrays, consumers);
  62. 	}
  63. }
Success #stdin #stdout 0.04s 23984KB
comments (?)
stdin
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Standard input is empty
stdout
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log1
10
log3
1012
log3
1022
log3
1032
log1
20
log3
2012
log3
2022
log3
2032
log1
30
log3
3012
log3
3022
log3
3032
https://ideone.com/HXrIXd
language:
C# (gmcs 5.20.1)
created:
7 years ago
visibility:
public

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