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=0
+    high=99
+    n=num
+    while low<=high:
+        mid=(low+high)//2
+        g=alist[mid]
+        if n==g:
+            return n
+        elif n>g:
+            low=mid+1
+        else:
+            high=mid-1
+    return no
+a=binary_search(alist,num)
+print(a)
\ No newline at end of file