auto save

diy1.py

+import time
+
+start_time = time.time()
+
 list1 = []
+print("开始时间 :",start_time)
+
 for a in range(0, 1000):
     for b in range(0, 1000):
-        list1.insert(0, 0)
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+        list1.insert(-1, 0)
+end_time = time.time()
+print("结束时间 :",end_time)
+
+result = end_time - start_time
+print("总共耗时:",result)

diy2.py

+alist = [12,15,20,17,9,13,8,6,]
+
+n = len(alist)
+
+for i in range(0, n-1):
+    for j in range(0, n-1):
+     
+        if alist[j] > alist[j + 1]:
+            alist[j],alist[j + 1] = alist[j+1],alist[j]
+    print(alist)
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