X = [[12,7,3],
 [4 ,5,6],
 [7 ,8,9]]
# 3x4 matrix
Y = [[5,8,1,2],
 [6,7,3,0],
 [4,5,9,1]]
# result is 3x4
result = [[0,0,0,0],
 [0,0,0,0],
 [0,0,0,0]]

# iterate through rows of X
for i in range(len(X)):
 # iterate through columns of Y
      for j in range(len(Y[0])):
 # iterate through rows of Y
              for k in range(len(Y)):
                      result[i][j] += X[i][k] * Y[k][j]

for r in result:
      print(r)
Вывод результата:
[114, 160, 60, 27]
[74, 97, 73, 14]
[119, 157, 112, 23]


2015-11-29 • Просмотров [ 472 ]