save project

1.py

+import random
+while True:
+    num=random.randint(1,100)
+    a=int(input("一个 1-100 之间的整数:"))
+    if a==num:
+        print('猜对咧')
+        break
+    elif a<num:
+        print('小了')
+    else:
+        print('大了')
\ No newline at end of file

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]
+high=len(num_list)-1
+low=0
+n=20
+while low<=high:
+    mid=(high+low)//2
+    gess=num_list[mid]
+    if gess==n:
+        print('它的索引为：',mid)
+        exit()
+    elif n>gess:
+        low=mid+1
+    elif n<mid:
+        high=mid-1  
+print('它不在列表中') 
+