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how to rotate a matrix 90 degrees clockwise Code Example
how to rotate a matrix 90 degrees clockwise 
int n=A.size();
    for(int i=0;i<n/2;i++){
        for(int j=i;j<n-i-1;j++){
            int temp=A[i][j];
            A[i][j]=A[n-1-j][i];
            A[n-1-j][i]=A[n-1-i][n-1-j];
            A[n-1-i][n-1-j]=A[j][n-1-i];
            A[j][n-1-i]=temp;
        }
    }
rotate matrix 90 degrees clockwise in python 
#The program defines the square matrix 90 degrees clockwise direction.
m,n  = map(int,input().split())
#m,n are the number of rows and columns.
#m = int(input('rows'))
l = []
for i in range(m):
	x = list(map(int,input().split()))  #for taking the  rows a time and split it append to an empty list		
	l.append()
for i in range(m):
	for j in range(m-1,-1,-1):
		print(l[j][i],end=' ')
	print(end='\n')



Cpp

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