摘要: The gray code is a binary numeral system where two successive values differ in only one bit. Given a non-negative integer n representing the total num 阅读全文
posted @ 2018-04-22 18:50 乐乐章 阅读(171) 评论(0) 推荐(0)
摘要: Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses. For example, given n = 3, a solution set is: [ 阅读全文
posted @ 2018-04-22 17:22 乐乐章 阅读(299) 评论(0) 推荐(0)