save project

my_tree.py

-num_list=[1,3,5,8,11,15,17,18,20,21]
-num=20
-low=0
-high=len(num_list)-1
-while low<=high:
+import random
+
+alist=[]
+for i in range(1,101):
+    alist.append(i)
+num=random.choice(alist)
+
+def bbi(alist,num):
+    low=0                                                   #851216
+    high=len(num_list)-1
+
+    while low<=high:
         mid=(low+high)//2
         guss=num_list[mid]
         if guss==num: