[Python] 행렬의 덧셈

[나의 풀이]

def solution(arr1, arr2):
    for i in range(len(arr1)):
        for j in range(len(arr1[0])):
            arr1[i][j] += arr2[i][j]
    return arr1

[다른 풀이]

def sumMatrix(A,B):
    answer = [[c + d for c, d in zip(a, b)] for a, b in zip(A,B)]
    return answer

def sumMatrix(A,B):
    for i in range(len(A)) :
        for j in range(len(A[0])):
            A[i][j] += B[i][j] 
    return A

import numpy as np
def sumMatrix(A,B):
    A=np.array(A)
    B=np.array(B)
    answer=A+B
    return answer.tolist()