save project

binary_search.py

 # 使用二分查找法，找出9和20在列表里面的索引
-num_list = [1, 3, 5, 8, 11, 15, 17, 18, 20, 21]
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+num_list = [1, 3, 5, 8, 11, 15, 17, 18, 20, 21]
+n1=20
+nh=0
+min=0
+max=len(num_list)-1
+while min<=max:
+    mid=(min+max)//2
+    ges=num_list[mid]
+    if ges==n1:
+        print('ohhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh')
+        print('第',mid,'位')
+        nh=1
+        break
+    if ges>n1:
+        max=mid-1
+    if ges<n1:
+        min=mid+1
+if nh==0:
+    print('noooooooooooooooooooooooooooooooooooooooooooooooo')
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