Merge pull request #107 from Zafaryab/master

Missing built-in function sum() added, included a loop and changed index variables

Thank you.

Author: kushaldas

code/matrixmul.py

@@ -11,7 +11,7 @@
     b.append([int(x) for x in raw_input("").split(" ")])
 c = []
 for i in range(0, n):
-    c.append([a[i][j] * b[j][i] for j in range(0,n)])
+    c.append([sum([a[i][k] * b[k][j] for k in range(0,n)]) for j in range (0,n)])
 print "After matrix multiplication"
 print "-" * 10 * n
 for x in c: