This project multiples two matrices together. The process is below.
[a b c] [j k l]
[d e f] * [m n o]
[g h i] [p q r]
= [aj bk cl]
[dm en fo]
[gp hq ir]
X = [[1,2,3],
[4 ,5,6],
[7 ,8,9]]
Y = [[9,8,7],
[6,5,4],
[3,2,1]]
result = [[0,0,0],
[0,0,0],
[0,0,0]]
# iterate through rows
for i in range(len(X)):
# iterate through columns
for j in range(len(X[0])):
result[i][j] = X[i][j] * Y[i][j]
for r in result:
print(r)
[9, 16, 21]
[24, 25, 24]
[21, 16, 9]
X = [[1, 2, 3],
[4, 5, 6],
[7, 8, 9]]
Y = [[9, 8, 7],
[6, 5, 4],
[3, 2, 1]]
answer = [[X[i][j] * Y[i][j] for j in range(len(X[0]))] for i in range(len(X))]
for r in answer:
print(r)
[9, 16, 21]
[24, 25, 24]
[21, 16, 9]