save project

4.py

+import random
+guss=random.randint(1,100)
+low=1
+high=100
+c=0
+while True:
+    num=int(input("你要哪个数字："))
+    mid_num=(low+high)//2
+    if num > guss:
+        low=mid_num+1
+        print("猜大了")
+        c+=1
+    if num < guss:
+        high=mid_num-1
+        print("猜小了")
+        c+=1
+    if num==guss:
+        print("对了")
+        c+=1
+        print("你猜了",c,"次")
+        break

binary_search.py

 # 使用二分查找法，找出9和20在列表里面的索引
-num_list = [1, 3, 5, 8, 11, 15, 17, 18, 20, 21]
\ No newline at end of file
+num_list = [1, 3, 5, 8, 11, 15, 17, 18, 20, 21]
+num=int(input("你要哪个数字："))
+low=0
+high=len(num_list)-1
+while True:
+    mid=(low+high)//2
+    guss=num_list[mid]
+    if num<guss:
+        high=mid-1
+    elif num>guss:
+        low=mid+1
+    elif num==guss:
+        print("找到了")
+        break
+    if high<low:
+        print("不存在")
+        break
+
+
+
+
+
+
+
+