01 2020 档案

493. Reverse Pairs
摘要：Given an array nums, we call (i, j) an important reverse pair if i < j and nums[i] > 2*nums[j]. You need to return the number of important reverse pai 阅读全文
posted @ 2020-01-19 21:37 elar 阅读(232) 评论(0) 推荐(0)