摘要: 题目如下: Given two non-negative integers x and y, an integer is powerful if it is equal to x^i + y^j for some integers i >= 0 and j >= 0. Return a list o 阅读全文
posted @ 2019-01-07 16:21 seyjs 阅读(409) 评论(0) 推荐(0) 编辑
摘要: 题目如下: Given an array A, we can perform a pancake flip: We choose some positive integer k <= A.length, then reverse the order of the first k elements o 阅读全文
posted @ 2019-01-07 16:10 seyjs 阅读(412) 评论(0) 推荐(0) 编辑