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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int m, n;
  6. 	cin>>m>>n;
  7. 	vector<vector<int>> arr(m,vector<int>(n,0));
  8. 	for (int i=0; i<m; i++){
  9. 		for (int j=0; j<n; j++)
  10. 			cin>>arr[i][j];
  11. 	}
  12.  
  13. 	// for (int i=0; i<m; i++){
  14. 	// 	for (int j=0; j<n; j++){
  15. 	// 		if (i>j) swap (arr[i][j], arr[j][i]);
  16. 	// 	}
  17. 	// }
  18.  
  19. 	for (int i=0; i<m; i++){
  20. 		for (int j=0; j<n; j++){
  21. 			if (i&1==1)
  22. 				cout<<arr[i][n-1-j]<<" ";
  23. 			else
  24. 				cout<<arr[i][j]<<" ";
  25. 		}
  26. 		// cout<<endl;
  27. 	}
  28.  
  29. 	return 0;
  30. }
Success #stdin #stdout 0.01s 5320KB
comments (?)
stdin
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3 3

2 3 4 
5 6 7
8 9 0
stdout
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2 3 4 7 6 5 8 9 0
https://ideone.com/7jJFE6
language:
C++14 (gcc 8.3)
created:
7 hours ago
visibility:
public

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