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]
+num=20
+low=0
+hidkj=len(num_list)-1
+while low <= hidkj:
+    midl=(low+hidkj)//2
+    q=num_list[midl]
+    if q<num:
+        low=midl+1
+    elif q>num:
+        hidkj=midl-1
+    else:
+        print("zdl:",midl)
+        break
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