Created
December 8, 2012 14:14
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NxN Matrix rotation
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class SquareMatrix(): | |
"""Square matrix implementation by thenonameguy""" | |
def __init__(self,size): | |
self.size = size | |
self.emptyMatrix() | |
def emptyMatrix(self): | |
self.matrix=[[0 for i in range(self.size)]for j in range(self.size)] | |
def makeIdentity(self): | |
self.emptyMatrix() | |
for i in range(0,self.size): | |
self.matrix[i][i]=1 | |
def print(self): | |
for i in range(0,self.size): | |
print("[",end='') | |
for j in range(0,self.size): | |
print(self.matrix[i][j],end='') | |
if j<self.size-1: | |
print(",",end=''); | |
print("]") | |
def rotate(self): | |
for i in range(0,self.size): | |
for j in range(0,self.size): | |
foo=self.matrix[j][self.size-i-1] | |
self.matrix[j][self.size-i-1]=self.matrix[i][j] | |
self.matrix[i][j]=foo | |
if __name__=="__main__": | |
x=SquareMatrix(4) | |
x.makeIdentity() | |
x.matrix[2][0]=8 | |
x.print() | |
print("Rotating...") | |
x.rotate() | |
x.print() | |
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