save project

binary_search.py

 # 使用二分查找法，找出9和20在列表里面的索引
+import random
+
+alist=[]
+for i in range(1,101):
+    alist.append(i)
+num=random.choice(alist)
+def binary_search(alist,num):
 bingo_num=20
 num_list = [1, 3, 5, 8, 11, 15, 17, 18, 20, 21]
 low=0
@@ -13,4 +20,4 @@ while low<=high:
     elif guss_num<bingo_num:
         low=mid+1
     elif guss_num>bingo_num:
-        high=mid-1    
\ No newline at end of file
+        high=mid-1