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

Dot and Cross

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352 Discussions

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  • yashdeora98294
     + 0 comments

    Here is HackerRank Dot and Cross in Python solution - https://programmingoneonone.com/hackerrank-dot-and-cross-problem-solution-in-python.html

  • daturpinusn
     + 0 comments

    Not sure why they want you to do dot and cross when numpy has a matrix multiplication method.

    print(np.matmul(a, b))

  • arohi_agrawal111
     + 0 comments
    import numpy as np

N = int(input())

A = np.array([list(map(int, input().split())) for _ in range(N)])
B = np.array([list(map(int, input().split())) for _ in range(N)])

print(np.matmul(A, B))

  • fa_caviglia
     + 0 comments
    import numpy as np

n = int(input())

a = np.array([list(map(int, input().split())) for _ in range(n)])
b = np.array([list(map(int, input().split())) for _ in range(n)])

matrix = np.zeros((n, n), dtype = int)
for i in range(n):
    for j in range(n):
        matrix[i, j] = np.sum([a[i, k] * b[k, j] for k in range(n)])
    
print(matrix)

  • ppaunikar499
     + 0 comments

    import numpy n = int(input()) A = [list(map(int, input().split()))for _ in range (n)] B = [list(map(int, input().split()))for _ in range (n)] A = numpy.array(A) B = numpy.array(B) print(numpy.dot(A,B))