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, 2, 3, 4, 5, 6, 7, 8,11,15,17,18,20,21]
+def search(num_list,num):
+    low=0 
+    high=len(num_list)-1
+    while high >=low:
+        mid=(high+low)//2
+        if num_list[mid]==num:
+            return mid
+        elif num_list[mid]>num:
+            high=mid-1
+        else:
+            low=mid+1
+    return"on 找"
+print(search(num_list,1))
+    
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