摘要： 3-Sum : Given N distinct integers, how many triples sum to exactly zero?---------------------------------------------------------------------------------------3-Sum : brute-force algorithm O(N3)---------------------------------------------------------------------------------------3-Sum : sorting-bas 阅读全文

摘要： Connected components : Maximal set of objects that are mutually connected.Find query : Check if two objects are in the same component.Union command : Replace components containing two objects with their union.------------------------------------------------------------------------------------------- 阅读全文