addition of two matrices in python
num = [2, 3, 4], [5, 6, 7]
num2 = [8, 9, 10], [11, 12, 13]
num3 = [0, 0, 0], [0, 0, 0]
for i in range(len(num)):
print(num[i])
for i in range(len(num)):
print(num2[i])
print()
for i in range (len(num)):
for j in range(len(num)+1):
num3[i][j] = num[i][j] + num2[i][j]
for i in range(len(num3)):
print(num3[i])how to add two matrices in python
matrix1 = [[0, 1, 2], [3, 4, 5], [6, 7, 8]]
matrix2 = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
def addTheMatrix(matrix1, matrix2):
matrix1Rows = len(matrix1)
matrix2Rows = len(matrix2)
matrix1Col = len(matrix1[0])
matrix2Col = len(matrix2[0])
#base case
if(matrix1Rows != matrix2Rows or matrix1Col != matrix2Col):
return "ERROR: dimensions of the two arrays must be the same"
#make a matrix of the same size as matrix 1 and matrix 2
matrix = []
rows = []
for i in range(0, matrix1Rows):
for j in range(0, matrix2Col):
rows.append(0)
matrix.append(rows.copy())
rows = []
#loop through the two matricies and the summation should be placed in the
#matrix
for i in range(0, matrix1Rows):
for j in range(0, matrix2Col):
matrix[i][j] = matrix1[i][j] + matrix2[i][j]
return matrix
print(addTheMatrix(matrix1, matrix2))
#output = [[1, 3, 5], [7, 9, 11], [13, 15, 17]]Copyright © 2021 Codeinu
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