From 07512b4dbd3c68956df0b3fba80e5c19e34d253f Mon Sep 17 00:00:00 2001
From: Tav-1 <tjp678@gmail.com>
Date: Tue, 7 Mar 2017 13:52:07 +0800
Subject: [PATCH] My Changes

---
 powerset.py | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/powerset.py b/powerset.py
index 1082f65..15bbba8 100644
--- a/powerset.py
+++ b/powerset.py
@@ -4,8 +4,8 @@
 
 @author: zhengzhang
 """
-import time
-import matplotlib.pyplot as plt
+#import time
+#import matplotlib.pyplot as plt
 
 # timing the execution of a function
 def timeit(f, *args):
@@ -27,7 +27,7 @@ def powerset_add(l):
         pass
 # your code ends here
     return pset
-    
+
 # play with the code below in the console, e.g get_bin_str(3, 5)
 def get_bin_str(n, up_to):
     code = bin(n).split('b')[-1]
@@ -35,7 +35,7 @@ def get_bin_str(n, up_to):
         raise ValueError('not enough')
     code = '0' * (up_to - len(code)) + code
     return code
-    
+
 def powerset_comb(l):
     pset = []
     total_items = len(l)
@@ -48,16 +48,16 @@ def powerset_comb(l):
 # your code ends here
         pset.append(subset)
     return pset
-    
+
 def main():
-    
+
     num_items = 4
     my_list = list(range(num_items))
-    
+
 # test using inductive logic
     my_pset = powerset_add(my_list)
     print("using induction:\n", my_pset)
-    
+
 # test using combinational logic
     my_pset = powerset_comb(my_list)
     print("using combination:\n", my_pset)
@@ -69,9 +69,9 @@ def main():
         takes = timeit(powerset_comb, my_list)
         exec_time.append(takes)
 
-    print("powerset", exec_time)    
+    print("powerset", exec_time)
 # once you are done with powerset function, uncomment the line below
 # and plot the execution time
     plt.plot(exec_time)
 
-main()
\ No newline at end of file
+main()