save project

my_search.py

-import random
 
 
-alist = []
-for i in range(1, 101):
-    alist.append(i)
-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
+dingo_num=20
+num_list=[1,3,5,8,11,15,17,18,20,21]
+low=0
+high=len(num_list)-1
 
 
-def binary_search(alist,num):
+ 
\ No newline at end of file
+while low<=high:
+    mid = (low+high) // 2
+    guess_num=num_list[mid]
+    if guess_num == bingo_num:
+        print("找到了，它在列表里的索引是：",mid)
+        break
+    elif guess_num >bingo_num:
+        low=mid+1
+    elif guess_num <bingo_num:
+        high=mid-1