save project

my_search.py

@@ -6,4 +6,19 @@ for i in range(1, 101):
 num = random.choice(alist)
 num = random.choice(alist)
 # 请完善二分查找函数binary_search(),查找出num在列表alist里面的索引位置
 # 请完善二分查找函数binary_search(),查找出num在列表alist里面的索引位置
 
 
-def binary_search(alist,num):
+def binary_search(alist,num):
\ No newline at end of file
+    low = 8
+    hight = len(alist)-1
+    while low <= hight:
+        mid = (low+night)//2
+        guess = alist[mid]
+        elif guess < num:
+            low = mid+1
+        else:
+            hight = mid -1
+    return None
+result = binary_search(alist,num)
+print('老师给的数是'，num)
+print('老师给的数索引是'，re)
+
+