2차원 행렬 arr1과 arr2를 입력받아, arr1에 arr2를 곱한 결과를 반환하는 함수, solution을 완성해주세요.
제한 조건
입출력 예
arr1 | arr2 | return |
---|---|---|
[[1, 4], [3, 2], [4, 1]] | [[3, 3], [3, 3]] | [[15, 15], [15, 15], [15, 15]] |
[[2, 3, 2], [4, 2, 4], [3, 1, 4]] | [[5, 4, 3], [2, 4, 1], [3, 1, 1]] | [[22, 22, 11], [36, 28, 18], [29, 20, 14]] |
def solution(arr1, arr2):
result = []
arr1_s = len(arr1)
arr2_s = len(arr2[0])
for i in range(arr1_s):
row = []
for itr in range(arr2_s):
tmp = 0
for j in range(len(arr2)):
tmp += arr1[i][j] * arr2[j][itr]
row.append(tmp)
result.append(row)
return result