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  1.  
  2. #include<bits/stdc++.h>
  3.  
  4. using namespace std;
  5. void rotate(vector < vector < int >> & matrix) {
  6.     int n = matrix.size();
  7.     //transposing the matrix
  8.     for (int i = 0; i < n; i++) {
  9.     for (int j = 0; j < i; j++) {
  10.         swap(matrix[i][j], matrix[j][i]);
  11.     }
  12.     }
  13.     //reversing each row of the matrix
  14.     for (int i = 0; i < n; i++) {
  15.     reverse(matrix[i].begin(), matrix[i].end());
  16.     }
  17. }
  18.  
  19. int main() {
  20.     vector < vector < int >> arr;
  21.     arr =  {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
  22.     rotate(arr);
  23.     cout << "Rotated Image" << endl;
  24.     for (int i = 0; i < arr.size(); i++) {
  25.     for (int j = 0; j < arr[0].size(); j++) {
  26.         cout << arr[i][j] << " ";
  27.     }
  28.     cout << "n";
  29.     }
  30.  
  31. }
  32.  
  33.  
Success #stdin #stdout 0s 5280KB
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Standard input is empty
stdout
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Rotated Image
7 4 1 n8 5 2 n9 6 3 n
https://ideone.com/yJ04t9
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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