save project

my_search.py

 import random
 import random
 
 
-alist = []
+a = []
 for i in range(1, 101):
 for i in range(1, 101):
     alist.append(i)
     alist.append(i)
 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):
+g=random.choice(a)
+def b(al,n):
\ No newline at end of file
+    l=0
+    r=len(al)-1
+    while l<=r:
+        mid=(l+r)//2
+        if al[mid] == n:
+            return mid
+        if al[mid]<n:
+            l=mid+1
+        else:
+            r=mid-1
+print(b)
\ No newline at end of file