@puneet Can you give us an example what u mean by 180 degree rotation........... For given matrix like 1, 2, 3, 4 5, 6, 7, 8 9,10,11, 12 13,14,15,16
What is the expected output? On Wed, Jul 27, 2011 at 11:29 PM, Puneet Gautam <[email protected]>wrote: > Can anyone give an O(n) solution pls...?? > I think the above code is an O(n^2) solution.. > if i am not wrong...!!! > > > > On 7/27/11, amit <[email protected]> wrote: > > #include <cstdio> > > #include <algorithm> > > using namespace std; > > > > const int MX = 1000; > > int n, m; > > int a[MX][MX]; > > > > int main() { > > scanf("%d%d", &n, &m); > > for(int i = 0; i < n; i++) > > for(int j = 0; j < m; j++) > > scanf("%d", &a[i][j]); > > > > for(int i = 0; i < n/2; i++) > > for(int j = 0; j < m; j++) > > swap(a[i][j], a[n-i-1][m-j-1]); > > if(n&1) > > for(int j = 0; j < m/2; j++) > > swap(a[n/2][j], a[n/2][m-j-1]); > > > > for(int i = 0; i < n; i++) { > > for(int j = 0; j < m; j++) > > printf("%d ", a[i][j]); > > printf("\n"); > > } > > } > > > > > > On Jul 27, 7:54 pm, Anika Jain <[email protected]> wrote: > >> is it lyk for {1,2,3 > >> 4,5,6, > >> 7,8,9} > >> to be {3,2,1, > >> 6,5,4, > >> 9,8,7} ?? > >> > >> > >> > >> On Wed, Jul 27, 2011 at 9:37 AM, Deoki Nandan <[email protected]> > wrote: > >> > rotate a 2D matrix by angle 180 > >> > >> > -- > >> > **With Regards > >> > Deoki Nandan Vishwakarma > >> > >> > * > >> > * > >> > >> > -- > >> > You received this message because you are subscribed to the Google > >> > Groups > >> > "Algorithm Geeks" group. > >> > To post to this group, send email to [email protected]. > >> > To unsubscribe from this group, send email to > >> > [email protected]. > >> > For more options, visit this group at > >> >http://groups.google.com/group/algogeeks?hl=en. > > > > -- > > You received this message because you are subscribed to the Google Groups > > "Algorithm Geeks" group. > > To post to this group, send email to [email protected]. > > To unsubscribe from this group, send email to > > [email protected]. > > For more options, visit this group at > > http://groups.google.com/group/algogeeks?hl=en. > > > > > > -- > You received this message because you are subscribed to the Google Groups > "Algorithm Geeks" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/algogeeks?hl=en. > > -- Thank You Rajeev Kumar -- You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en.
