auto save

diy2.py

-class Hero:
-    def __init__(self,name,hp,attack):
-        self.level=1
-        self.name= name
-        self.hp= hp
-        self.attack = attack
-    def qwe(self):
-        self.level=self.level+1
-        self.hp=self.hp+5000
-        self.attack=self.attack+1000
-yase = Hero('亚瑟',1000,300)
-print(yase.hp)
-yase.qwe()
-print(yase.hp)
+import random
+alist = []
+for i in range(1,101):
+    alist.append(i)
+num = random.choice(alist)
+def binary_search(alist,num): 
+    low = 0
+    high = len(alist) - 1
+    while low <= high:
+        mid = (low+high)//2
+        guess = alist[mid]
+        if guess == num:
+            return mid
+        elif guess < num:
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+            low = mid + 1
+        elif guess > num:
+            high = mid - 1
+    return None
+result = binary_search(alist,num)
+print(result)
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