摘要: Given an array of integers and an integer k, you need to find the total number of continuous subarrays whose sum equals to k. Example Example1 Input: 阅读全文
posted @ 2020-03-28 11:21 xuan_abc 阅读(113) 评论(0) 推荐(0)
摘要: Given two words (beginWord and endWord), and a dictionary's word list, find all shortest transformation sequence(s) from beginWord to endWord, such th 阅读全文
posted @ 2020-03-28 04:20 xuan_abc 阅读(184) 评论(0) 推荐(0)