save project

my_search.py

 import random
 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,bingo):
+    low=0
+    high=len(alist)-1
+    while low<=high:
+        mid=(low+high)//2
+        guess=alist[mid]
+        if bingo==guess:
+            return mid
+        elif guess<bingo:
+            low=mid+1
+        else:
+            high=mid-1
+    return None
 
 
-def binary_search(alist,num):
+guess_list=[]
\ No newline at end of file
+for i in range(20):
+    if random.randint(0,2)==2:
+        guess_list.append(i)
+bingo=guess_list[random.randint(0,len(guess_list)-1)]
+
+result=binary_search(guess_list,bingo)
+print('查找结束，猜的值是：',bingo)
+print('它的索引是：',result)
+print(guess_list)
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