save project

binary_search.py

@@ -3,6 +3,7 @@ bingo_num = 20
 num_list = [1, 3, 5, 8, 11, 15, 17, 18, 20, 21]
 low = 0
 high = len(num_lis)-1
+def binary_search(alist,num)
 while low <= high:
     mid = (low+high) // 2
     guess_num = num_list[mid]
@@ -13,6 +14,13 @@ while low <= high:
             low = mid+1
             elif guess_num > bingo_num:
             low = mid-1
+            return None
+result = binary_search(alist, num)
+print("老师给的数是"，num)
+print("他在列表的索引是"，resultresult)
+
+
+