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
-
-def binary_search(alist,num):
-    low=0
+students =["悟空","小贝","八戒","波奇"]
+students.remove("八戒")
+print(students)
+students.append("诺依")
+print(students)
+red=students[:2]
+blue=students[-2:]
+print(red)
+print(blue)
\ No newline at end of file
-    high=len(alist)-1
-    while low<=high:
-        mid=(low+high)//2
-        guess=alist[mid]
-        if guess==num:
-            return mid
-        elif guess<num:
-            low=mid+1
-        else:
-            high=mid-1  
-    return None
-