def adjointOfMatrix(M): matrix_C = [] for i in range(n): matrix = [] for j in range(n): nr_M = [] for row in range(n): for column in range(n): if (row == i or column == j): continue else: nr_M.append(M[row][column]) a, b, c, d = nr_M det = (ad)-(bc) cofactor = ((-1)**(i+j))*det matrix.append(cofactor) matrix_C.append(matrix)
# Let's find the transpose of cofactor matrix
for i in range(n):
for j in range(i+1,n):
matrix_C[i][j],matrix_C[j][i] = matrix_C[j][i],matrix_C[i][j]
return matrix_C
M = [[3,1,-1],[2,-2,0],[1,2,-1]] n = len(M) print(adjointOfMatrix(M))