save project

my_search.py

@@ -6,4 +6,16 @@ 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 shuzi(a,low,high):
+    mid=(low+high)//2
+    if low>high:
+        print("数字不存在")
+        return
+    if num_list[mid]==a:
+        print("找到了")
+        return
+    elif num_list[mid]<a:
+        shuzi(a,mid+1,high)
+    else:
+        shuzi(a,low,mid-1)
+shuzi(num,0,9)
\ No newline at end of file