Python (py3)] The code below can already solve for matrix addition. Please add the code for matrix scalar multiplication. The input will come from file1.txt, and the output should be printed to output.txt Format of the input from file1.txt: First Line: type of operation (add or scalmultiply) Second Line: matrix A dimension (example: if 3 rows and 2 columns, type 3 2) Third Line: matrix A elements Fourth Line: matrix B dimension (or the scalar number for the operation of scalar multiplication) Fifth Line: matrix B elements (not needed for scalar multiplication) Sample input 1: scalMultiply 2 2 53 -4 7 31 2 Sample output 1: 106 -8 14 62 ---------------------------------------------------------------------------------- import numpy as np import sys f1 = open("file1.txt","r") lines = f1.readlines() dim = lines[1].split() k=2 mat1 = np.empty((0,int(dim[0])), int) for i in range(0,int(dim[0])): l = lines[k].split() l = list(map(int, l)) ls = np.array([l]) k += 1 mat1 = np.append(mat1, ls, axis=0) dim2 = lines[k].split() k += 1 if dim != dim2: sys.exit("Matrix addition cannot be performed; dimensions are unequal.") mat2 = np.empty((0,int(dim2[0])), int) for i in range(0,int(dim2[0])): l = lines[k].split() l = list(map(int, l)) ls = np.array([l]) k += 1 mat2 = np.append(mat2, ls, axis=0) print(np.add(mat1,mat2)) f2 = open("output.txt","w") s = np.add(mat1,mat2) # write output matrix in output.txt file for i in range(0, len(s)): for j in range(0, len(s[i])): line = str(s[i][j])+" " f2.write(line) f2.write("\n") # close the output file f2.close()
[Python (py3)]
The code below can already solve for matrix addition. Please add the code for matrix scalar multiplication. The input will come from file1.txt, and the output should be printed to output.txt
Format of the input from file1.txt:
First Line: type of operation (add or scalmultiply)
Second Line: matrix A dimension (example: if 3 rows and 2 columns, type 3 2)
Third Line: matrix A elements
Fourth Line: matrix B dimension (or the scalar number for the operation of scalar multiplication)
Fifth Line: matrix B elements (not needed for scalar multiplication)
Sample input 1:
scalMultiply
2 2
53 -4
7 31
2
Sample output 1:
106 -8
14 62
----------------------------------------------------------------------------------
import numpy as np
import sys
f1 = open("file1.txt","r")
lines = f1.readlines()
dim = lines[1].split()
k=2
mat1 = np.empty((0,int(dim[0])), int)
for i in range(0,int(dim[0])):
l = lines[k].split()
l = list(map(int, l))
ls = np.array([l])
k += 1
mat1 = np.append(mat1, ls, axis=0)
dim2 = lines[k].split()
k += 1
if dim != dim2:
sys.exit("Matrix addition cannot be performed; dimensions are unequal.")
mat2 = np.empty((0,int(dim2[0])), int)
for i in range(0,int(dim2[0])):
l = lines[k].split()
l = list(map(int, l))
ls = np.array([l])
k += 1
mat2 = np.append(mat2, ls, axis=0)
print(np.add(mat1,mat2))
f2 = open("output.txt","w")
s = np.add(mat1,mat2)
# write output matrix in output.txt file
for i in range(0, len(s)):
for j in range(0, len(s[i])):
line = str(s[i][j])+" "
f2.write(line)
f2.write("\n")
# close the output file
f2.close()
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