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Mitax

Lists

Feb 14th, 2017
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  1. Lists
  2.  
  3. List<int> numbers = new List<int>();
  4. List<string> texts = new List<string>();
  5.  
  6. var numers = new List<int>();
  7.  
  8. numbers.Add(1);
  9. numbers.Add(2);
  10.  
  11. numbers[1] = 1000;
  12.  
  13. var words = new List<strings>
  14. {
  15. "Pesho", "Vankata", "Gosho"
  16. };
  17.  
  18. foreach(var name in words)
  19. {
  20. Console.WriteLine(name);
  21. }
  22.  
  23. var countOfName = words.Count;
  24.  
  25. .Add("lala");
  26.  
  27. numbers.Remove("Pesho"); //removes the first found item not all\
  28.  
  29. .RemoveAll // remove all occurrences
  30.  
  31. words.RemoveAt(0); //remove specific index
  32.  
  33. words.Insert(1, "shakala"); insert item in a specific index
  34.  
  35. All indexes are placed to the left or right depenging if we remove or insert items.
  36.  
  37. Removes and Insert are slow operations.
  38.  
  39. bool exists = numers.Contains(5);
  40.  
  41. numbers.sort(); //sorts in ascending order
  42.  
  43. .Reverse(); //sort in descending order
  44.  
  45. var numbers = Console.ReadLine(0
  46. .Split(' ')
  47. .Select(int.Parse)
  48. .ToList();
  49.  
  50.  
  51. List<int> numbers = Console.ReadLine(0
  52. .Split(' ')
  53. .Select(int.Parse)
  54. .ToList();
  55.  
  56.  
  57. var numbers = new List<int>(1000); //1000 elements initial storage. After the 1000 element, the List will double its size
  58.  
  59.  
  60. var square = Math.Sqrt(number);
  61. If (square == (int)square)
  62. //win
  63.  
  64. string.Join(" ", result);
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