摘要: There is a special keyboard with all keys in a single row. Given a string keyboard of length 26 indicating the layout of the keyboard (indexed from 0 阅读全文
posted @ 2021-03-07 12:08 CNoodle 阅读(283) 评论(0) 推荐(0)
摘要: You would like to make dessert and are preparing to buy the ingredients. You have n ice cream base flavors and m types of toppings to choose from. You 阅读全文
posted @ 2021-03-07 05:53 CNoodle 阅读(272) 评论(0) 推荐(0)