|
| 1 | +def rotateMatrixby90(ipMat, size): |
| 2 | + opMat = [[0 for i in range(size)] for j in range(size)] |
| 3 | + |
| 4 | + for i in range(size): |
| 5 | + for j in range(size): |
| 6 | + opMat[j][i] = ipMat[i][j] |
| 7 | + |
| 8 | + return opMat |
| 9 | + |
| 10 | +def reverseMatrix(ipMat, size): |
| 11 | + opMat = [[0 for i in range(size)] for j in range(size)] |
| 12 | + for i in range(size): |
| 13 | + for j in range(size): |
| 14 | + opMat[abs(i-(size-1))][j] = ipMat[i][j] |
| 15 | + |
| 16 | + return opMat |
| 17 | + |
| 18 | +def rotateMatrixby180(ipMat, size): |
| 19 | + mat_1 = rotateMatrixby90(ipMat, size) |
| 20 | + mat_2 = reverseMatrix(mat_1, len(mat_1)) |
| 21 | + mat_3 = rotateMatrixby90(mat_2, len(mat_2)) |
| 22 | + mat_4 = reverseMatrix(mat_3, len(mat_3)) |
| 23 | + |
| 24 | + return mat_4 |
| 25 | + |
| 26 | +def printMatrix(ipMat, size): |
| 27 | + for i in range(size): |
| 28 | + for j in range(size): |
| 29 | + print(ipMat[i][j], end=" ") |
| 30 | + print('\n') |
| 31 | + |
| 32 | +matA = [[1,2,3,4],[5,6,7,8],[9,10,11,12],[13,14,15,16]] |
| 33 | +print("Original-Matrix" + '\n') |
| 34 | +printMatrix(matA, len(matA)) |
| 35 | + |
| 36 | +print("Rotated-Matrix" + '\n') |
| 37 | +rotatedMat = rotateMatrixby90(matA, len(matA)) |
| 38 | +printMatrix(rotatedMat, len(rotatedMat)) |
| 39 | + |
| 40 | +matB = [[1, 5, 9, 13], [2, 6, 10, 14], [3, 7, 11, 15], [4, 8, 12, 16]] |
| 41 | +reverseMat = reverseMatrix(matB, len(matB)) |
| 42 | +print("Reverse-Matrix" + '\n') |
| 43 | +printMatrix(reverseMat, len(reverseMat)) |
| 44 | + |
| 45 | +print("Rotated-180-Matrix" + '\n') |
| 46 | +rotatedMat180 = rotateMatrixby180(matA, len(matA)) |
| 47 | +printMatrix(rotatedMat180, len(rotatedMat180)) |
0 commit comments