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  1. #include <iostream>
  2. #include <array>
  3. #include <string>
  4. #include <unordered_set>
  5. using namespace std;
  6.  
  7. const size_t MaxRows = 3;
  8. const size_t MaxColumns = 3;
  9. const size_t MaxCells = MaxRows * MaxColumns;
  10.  
  11. using gridRow = std::array<char, MaxColumns>;
  12. using grid = std::array<gridRow, MaxRows>;
  13.  
  14. grid CreateGrid(const std::string &keyword)
  15. {
  16.     grid g;
  17.     std::unordered_set<char> lookup;
  18.     size_t numFilled = 0;
  19.  
  20.     for(size_t i = 0; (i < keyword.size()) && (numFilled < MaxCells); ++i)
  21.     {
  22.         if (lookup.insert(keyword[i]).second)
  23.         {
  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.insert(ch).second)
  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 4424KB
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https://ideone.com/6fWkxt
language:
C++14 (gcc 8.3)
created:
5 years ago
visibility:
public

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