Method solveNQueens

-51-N_Queens/Code.java:61–67

(int n)

    }

    public List<List<String>> solveNQueens(int n) {
        int[][] board = new int[n][n];
        List<String> v = new ArrayList<>();
        List<List<String>> ans = new ArrayList<>();
        solve(board, n, 0, v, ans);
        return ans;
    }
}