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]
+low=0
+high=9
+num=8
+while True:
+    mid=(low+high)//2
+    guess=num_list[mid]
+    if guess==num:
+            print("找到了")
+            break
+    elif guess<num:
+            low=mid+1
+    else:
+            high=mid-1
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