LeetCode开心刷题第八天——15 3sum

15 3sum

this question is a complex problem to me because it's hard to detailed classification.

Special Usage:

vector<vector<int>> this container is equivalent to a two-dimensional array.if we use vector<int>,we can only put one variable in this container.But if we overlap the two containers.It can store the contents of an array.

标签：detailed,because,container,3sum,two,vector,15,array,LeetCode
来源： https://www.cnblogs.com/Marigolci/p/11068234.html