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  1. #include <iostream>
  2. #include <array>
  3. #include <string>
  4. using namespace std;
  5.  
  6. const size_t MaxRows = 3;
  7. const size_t MaxColumns = 3;
  8. const size_t MaxCells = MaxRows * MaxColumns;
  9.  
  10. using gridRow = std::array<char, MaxColumns>;
  11. using grid = std::array<gridRow, MaxRows>;
  12.  
  13. grid CreateGrid(const std::string &keyword)
  14. {
  15.     grid g;
  16.     std::array<bool, 256> lookup{};
  17.     size_t numFilled = 0;
  18.  
  19.     for(size_t i = 0; (i < keyword.size()) && (numFilled < MaxCells); ++i)
  20.     {
  21.         if (!lookup[static_cast<unsigned char>(keyword[i])])
  22.         {
  23.             lookup[static_cast<unsigned char>(keyword[i])] = true;
  24.             g[numFilled / 3][numFilled % 3] = keyword[i];
  25.             ++numFilled;
  26.         }
  27.     }
  28.  
  29.     for(char ch = 'A'; (ch <= 'Y') && (numFilled < MaxCells); ++ch)
  30.     {
  31.         if (!lookup[static_cast<unsigned char>(ch)])
  32.         {
  33.             g[numFilled / 3][numFilled % 3] = ch;
  34.             ++numFilled;
  35.         }
  36.     }
  37.  
  38.     return g;
  39. }
  40.  
  41. int main()
  42. {
  43.     grid myArray = CreateGrid("HELO");
  44. 	for(int row = 0; row < MaxRows; ++row) {
  45. 		for(int col = 0; col < MaxColumns; ++col) {
  46. 			cout << myArray[row][col] << " ";
  47. 		}
  48. 		cout << endl;
  49. 	}
  50.     return 0;
  51. }
Success #stdin #stdout 0s 4336KB
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H E L 
O A B 
C D F
https://ideone.com/fT0dfl
language:
C++14 (gcc 8.3)
created:
5 years ago
visibility:
public

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