auto save

diy2.py

-alist = [88, 75, 72, 82, 90, 85, 78, 91]
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+alist = [88, 75, 72, 82, 90, 85, 78, 91]
+n=len(alist)  #求列表的长度
+for i in range(0,n-1):   #求共要对几个数据进行排序
+    for j in range(0,n-1):  #每个数据要比较几次
+        if alist[j]<alist[j+1]:
+            alist[j],alist[j+1]=alist[j+1],alist[j]
+print(alist)
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