save project

my_search.py

@@ -6,4 +6,17 @@ for i in range(1, 101):
 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
 
-def binary_search(alist,num):
\ No newline at end of file
+def binary_search(alist,num):
+    while low<=high:
+    a=(high+low)//2
+    if num_list[a]==num:
+        print(a,num)
+        exit()
+    elif num>num_list[a]:
+        low=a+1
+        a=(high+low)//2
+    else:
+        high=a-1
+        a=(high+low)//2
+goal=binary_search(alist,num)
+print(goal)
\ No newline at end of file