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  1. #include <iostream>
  2. #include <vector>
  3.  
  4. std::vector<std::vector<int>>
  5. transpose (const std::vector<std::vector<int>>& input)
  6. {
  7.     std::vector<std::vector<int>> res(input[0].size(), std::vector<int>(input.size()));
  8.     for (std::size_t i = 0; i != input.size(); ++i) {
  9.         for (std::size_t j = 0; j != input[i].size(); ++j) {
  10.             res[j][i] = input[i][j];
  11.         }
  12.     }
  13.     return res;
  14. }
  15.  
  16. void print(const std::vector<std::vector<int>>& m)
  17. {
  18.     for (std::size_t i = 0; i != m.size(); ++i) {
  19.         for (std::size_t j = 0; j != m[i].size(); ++j) {
  20.             std::cout << m[i][j] << " ";
  21.         }
  22.         std::cout << std::endl;
  23.     }
  24. }
  25.  
  26. int main ()
  27. {
  28.     int width;
  29.     int length;
  30.  
  31.     std::cout << "enter the width followed by the length of the matrix: ";
  32.     std::cin >> width >> length;
  33.  
  34.     std::vector<std::vector<int>> input(width, std::vector<int> (length));
  35.     std::cout << "enter elements \n";
  36.     for (int j = 0; j < length; j++)
  37.         for (int i = 0; i < width; i++) {
  38.             std::cin >> input[i][j];
  39.         }
  40.  
  41.     std::cout << "your matrix is: \n";
  42.     print(input);
  43.     std::vector<std::vector<int>> output = transpose(input);
  44.  
  45.     std::cout << "the transpose is: \n";
  46.     print(output);
  47.     return 0;
  48. }
  49.  
Success #stdin #stdout 0s 3480KB
comments (?)
stdin
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2 3
1 2 3 4 5 6
stdout
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enter the width followed by the length of the matrix: enter elements 
your matrix is: 
1 3 5 
2 4 6 
the transpose is: 
1 2 
3 4 
5 6
https://ideone.com/Wh46fN
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
secret

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