* @param arr 待排序数组
The expanding hex-based world map contains lots for players to discover
，更多细节参见WPS官方版本下载
Councils blamed the delay on demand for new specialist vehicles, as well as issues with funding despite more than £340m in grants from Defra. You can find out what is happening with your local council's collections further down in this story.
Today’s puzzle is a new twist on a classic genre: the “common knowledge” hat riddle in which logicians deduce facts about their hats based on what they know, and what they know others know.