题目描述:
Remove all elements from a linked list of integers that have value val.
Example
Given: 1 --> 2 --> 6 --> 3 --> 4 --> 5 --> 6, val = 6
Return: 1 --> 2 --> 3 --> 4 --> ...
Remove all elements from a linked list of integers that have value val.
Example
Given: 1 --> 2 --> 6 --> 3 --> 4 --> 5 --> 6, val = 6
Return: 1 --> 2 --> 3 --> 4 --> ...
Write an algorithm to determine if a number is "happy".
A happy number is a number defined by the following process: Starting with any positive integer, replace the number by the sum of the squares of its digits, and ...
一个搭建在SAE上的Django应用,使用新浪微博提供的Python SDK已经稳定运行一年有余,但最近开始持续出现微博认证失败的状况。
摘录微博Python SDK的错误提示如下所示:
ERROR:django.request:Internal Server Error: /weibo/auth/ Traceback (most recent call last): File "/usr/local/sae/python/3rd/django-1.5/django/core/handlers/base.py", line 115, in get_response response = callback(request ...
在Django ORM中,使用order_by()方法对包含关联关系的模型进行排序时,返回结果中可能会出现重复元素。
假设有下面的两个模型Client和Interaction,Client为顾客,Interaction为交互。
Client类中包含顾客的姓名和联系方式,Interaction类中包含标题、时间、待办事项、截止日期。
class Client(models.Model):
name = models.CharField(max_length=255, unique=True)
contact = models.CharField(max_length=255, null=True, blank=True)
class Interaction(models.Model):
client = models.ForeignKey ...