Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.
Note: For the purpose of this problem, we define empty string as valid palindrome
Tag: LC
[LC] 19. Remove Nth Node From End of List
Given a linked list, remove the n-th node from the end of list and return its head.
Example:
Given linked list: 1->2->3->4->5, and n = 2.
After removing the second node from the end,
[Alipay Hotline] Speech technology behind intelligent customer service (LC-BLSTM-DNN Hybrid)
Xinzhiyuan recommended1
Xinzhiyuan and Yunqi community joint first release span>
Author: Kun Cheng, Algorithm Engineer, Alibaba Cloud Data Division
Telephone speech recognition is
PostgreSQL – String Sorting Sequence (LC_COLLATE and LC_CTYPE)
Obviously, since version 8.4, PostgreSQL allows each database to use a different locale.
So I went to the document to read about the locale (http://www. postgresql .org/docs/8.4/static/locale.html)