2018年5月
721. Accounts Merge
摘要： https://leetcode.com/problems/accounts-merge/description/ 阅读全文
posted @ 2018-05-05 15:04 JTechRoad 阅读(216) 评论(0) 推荐(0)
Union found
摘要： Use array. Use map. 阅读全文
posted @ 2018-05-05 09:13 JTechRoad 阅读(116) 评论(0) 推荐(0)
547. Friend Circles
摘要： https://leetcode.com/problems/friend-circles/description/ 阅读全文
posted @ 2018-05-05 09:01 JTechRoad 阅读(117) 评论(0) 推荐(0)
200. Number of Islands
摘要： https://leetcode.com/problems/number-of-islands/description/ 阅读全文
posted @ 2018-05-05 08:52 JTechRoad 阅读(94) 评论(0) 推荐(0)
684. Redundant Connection
摘要： https://leetcode.com/problems/redundant-connection/description/ Use map to do Union Find. 阅读全文
posted @ 2018-05-04 15:43 JTechRoad 阅读(115) 评论(0) 推荐(0)
451. Sort Characters By Frequency
摘要： https://leetcode.com/problems/sort-characters-by-frequency/description/ 阅读全文
posted @ 2018-05-04 15:01 JTechRoad 阅读(114) 评论(0) 推荐(0)
435. Non-overlapping Intervals
摘要： https://leetcode.com/problems/non-overlapping-intervals/description/ Greedy. Sort by (start,-end). Scan from left to right, if we see 2 intervals over 阅读全文
posted @ 2018-05-04 14:55 JTechRoad 阅读(145) 评论(0) 推荐(0)
stack
摘要： When we see ordering, consider stack. When we process item one by one, but I can't process current item, we move to next item (and that item might dep 阅读全文
posted @ 2018-05-04 14:33 JTechRoad 阅读(157) 评论(0) 推荐(0)
503. Next Greater Element II
摘要： https://leetcode.com/problems/next-greater-element-ii/description/ 阅读全文
posted @ 2018-05-04 14:29 JTechRoad 阅读(130) 评论(0) 推荐(0)
496. Next Greater Element I
摘要： https://leetcode.com/problems/next-greater-element-i/description/ 阅读全文
posted @ 2018-05-04 14:16 JTechRoad 阅读(119) 评论(0) 推荐(0)