Find centralized, trusted content and collaborate around the technologies you use most.
Teams
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
如何在 O(n) 时间的排列中找到 N 个整数数组(即 1,2,3,...,n)的字典顺序?
例如:- {2,3,1,4} 的字典顺序在其排列中是 9