2020年10月1日
765. Couples Holding Hands
摘要： N couples sit in 2N seats arranged in a row and want to hold hands. We want to know the minimum number of swaps so that every couple is sitting side b 阅读全文
posted @ 2020-10-01 12:51 Schwifty 阅读(151) 评论(0) 推荐(0)