auto save

demo1.py

+import time
+list1 = []
+start_time = time.time()
+for a in range(0, 1000):
+    for b in range(0, 1000):
+        list1.insert(0,0)
+end_time = time.time()
+print('结束时间',end_time)
+
+result = end_time-start_time
+print('总耗时',result)
\ No newline at end of file

demo2.py

+import time
+
+start = time.time()
+print(start)
+alist = [20,17,9,13,5,6,2,567]
+for j in range(len(alist)-1):
+    for i in range(len(alist)-j-1):
+            if alist[i] > alist[i+1]:
+                alist[i],alist[i+1]=alist[i+1],alist[i]
+
+
+result = start - time.time()
+print(result)
\ No newline at end of file

diy1.py

 list1 = []
 for a in range(0, 1000):
     for b in range(0, 1000):
-        list1.insert(0, 0)
\ No newline at end of file
+        list1.insert(0, 0)