Removes old matrix multiplication example

Author: kushaldas

docs/datastructure.rst

@@ -419,56 +419,3 @@ The output
     Babai failed :(
     Tesla 's  total marks 296
     Tesla passed :)
-
-matrixmul.py
-============
-
-In this example we will multiply two matrices. First we will take input the number of rows/columns in the matrix (here we assume we are using n x n matrix). Then values of the matrices.
-
-::
-
-    #!/usr/bin/env python3
-    n = int(input("Enter the value of n: "))
-    print("Enter values for the Matrix A")
-    a = []
-    for i in range(0, n):
-        a.append([int(x) for x in input("").split(" ")])
-    print("Enter values for the Matrix B")
-    b = []
-    for i in range(0, n):
-        b.append([int(x) for x in input("").split(" ")])
-    c = []
-    for i in range(0, n):
-        c.append([a[i][j] * b[j][i] for j in range(0, n)])
-    print("After matrix multiplication")
-    print("-" * 10 * n)
-    for x in c:
-        for y in x:
-            print("%5d" % y, end=' ')
-        print("")
-    print("-" * 10 * n)
-
-The output
-
-::
-
-    $ ./matrixmul.py
-    Enter the value of n: 3
-    Enter values for the Matrix A
-    1 2 3
-    4 5 6
-    7 8 9
-    Enter values for the Matrix B
-    9 8 7
-    6 5 4
-    3 2 1
-    After matrix multiplication
-    ------------------------------
-        9    12     9
-       32    25    12
-       49    32     9
-    ------------------------------
-
-Here we have used list comprehensions couple of times. *[int(x) for x in input("").split(" ")]* here first it takes the input as string by *input()*, then split the result by " ", then for each value create one int. We are also using *[a[i][j] * b[j][i] for j in range(0,n)]* to get the resultant row in a single line.
-
-