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  1. Prepare
  2. Python
  3. Numpy
  4. Dot and Cross
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Dot and Cross

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330 Discussions

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  • cromwellkwasi
     + 0 comments
    import numpy as np

n = int(input())

matrix_a = []

matrix_b = []

for i in range(n):
    matrix_a.append(list(map(int, input().split())))
    

for i in range(n):
    matrix_b.append(list(map(int, input().split())))

print(np.matmul(matrix_a,matrix_b))``

  • romitbhattachar2
     + 0 comments

    # def matrixmultiplicaton(A, B, N):

    result= [[0]*N for num in range(N)]

    for i in range(N):

    for j in range(N):

    for k in range(N):

    result[i][j] += A[i][k]*B[k][j]

    return result

    if name == 'main':

    N=int(input())

    A=[]

    for num in range(N):

    row=list(map(int, input(). strip(). split()))

    A.append(row)

    B=[]

    for num in range(N):

    row=list(map(int, input(). strip(). split()))

    B.append(row)

    result=matrixmultiplicaton(A, B, N)

    print("[", end="")

    for i, row in enumerate(result):

    print("[" + " ".join(map(str, row)) + "]", end="")

    if i==0:

    print()

    if i < len(result) - 1:

    print("", end="")

    print("]")

  • samitdebnath435
     + 0 comments

    import numpy

    N = int(input())

    ListA = list() ListB = list()

    for i in range(N): ListA.append(list(map(int , input().split())))

    for j in range(N): ListB.append(list(map(int , input().split())))

    A = numpy.array(ListA) B = numpy.array(ListB)

    result = numpy.dot(A , B)

    print(result)

  • sarthakgoyal47
     + 0 comments

    import numpy as np a = int(input()) element = [] element1= [] for z in range(a): b= input() c= b.split() element.append(c)

    for j in range(a): b= input() c= b.split() element1.append(c) element = np.array(element, dtype=int) element1 = np.array(element1, dtype=int) print(np.dot(element,element1))

  • kunalkawate424
     + 0 comments

    This is understandable solution from my side

    import numpy
matrices = []
n = int(input())
for i in range(2):
    matrix = []
    for i in range(n):
        matrix.append(list(map(int,input().split())))
    matrices.append(matrix)
print(numpy.dot(matrices[0],matrices[1]))