auto save

efwquidshgu.py

+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:
+            low = mid + 1
+        else:
+            high = mid-1
+    return None
+result = binary_search(alist,num)
+print('老师给的数是', num)
+print('找到了，他的索引是', result)
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my_search.py

 import random
 import random
+def guess():
+    count = 1
+    realnumber = random.randint(1,200)
+    while True:
+        guessnumber = int(input("输入"))
+        if guessnumber < realnumber:
+            count += 1
+            print("小")
+        elif guessnumber > realnumber:
+            print("大")
+            count += 1
+        else:
+            print('你猜对了，猜了',count,'次')
+            break
+def binary_search(alist,item):
+    low = 0
+    high = len(alist)-1
+    while low <= high:
+        mid = int((low + high)/2)
+        guess = alist[mid]
+        if guess > item:
+            high = mid-1
+        elif guess < item:
+            low = mid + 1
+        else:
+            return mid
+    return None
 
 
-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
+if __name__ == "__main__":
+    #guess()
+    list = [1,2,3,4,5,6,7,8,9,10]
+    print(binary_search(list,7))
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-
-def binary_search(alist,num):
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rhrfgrgfyg.py

+# a = int(input("人数"))
+# if a <= 5:
+#     y = a*300
+#     print('要',y,'元')
+# else:
+#     z = a*280
+#     print('要',z,'元')
+
+# a = int(input("a"))
+# b = int(input("b"))
+# z=a
+# if a<=b:
+#     print(a," ",b)
+# else:
+#     a=b
+#     b=z
+#     print(a," ",b)
+
+# a = int(input())
+# if a%4==0 and a%100!=0:
+#     print("yes")
+# elif a%400 == 0:
+#     print("yes")
+# else:
+#     print("no")
+
+for i in range(0,102,2):
+    print(i)
+    
+    
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