save project

binary_search.py

@@ -2,11 +2,11 @@
 num_list = [1, 3, 5, 8, 11, 15, 17, 18, 20, 21]
 l = 0
 r = len(num_list)-1
-a = 9
+a = 20
 while l <= r:
     m = (l+r)//2
     if num_list[m] == a:
-        print(m)
+        print("找到了,索引为:",m)
         exit()
     elif num_list[m] < a:
         l = m+1