@@ -0,0 +1,542 @@
+package leetcode;%0A%0Aimport java.util.ArrayList;%0Aimport java.util.List;%0A%0A/**%0A * https://leetcode.com/problems/n-queens/%0A */%0Apublic class Problem51 %7B%0A    public List%3CList%3CString%3E%3E solveNQueens(int n) %7B%0A        List%3CList%3CString%3E%3E result = new ArrayList%3C%3E();%0A        // TODO%0A        return result;%0A    %7D%0A%0A    public static void main(String%5B%5D args) %7B%0A        Problem51 prob = new Problem51();%0A        List%3CList%3CString%3E%3E result = prob.solveNQueens(4);%0A        for (List%3CString%3E row : result) %7B%0A            System.out.println(row);%0A        %7D%0A    %7D%0A%7D%0A

Add skeleton for problem 51