摘要:
Word Ladder II Given two words (start and end), and a dictionary, find all shortest transformation sequence(s) from start to end, such that:Only one l... 阅读全文
摘要:
Count and SayThe count-and-say sequence is the sequence of integers beginning as follows:1, 11, 21, 1211, 111221, ...1 is read off as "one 1" or 11.11... 阅读全文