Add        Permutations/solution.cpp
Add        PermutationsII/solution.cpp
Add        Pow(x, n)/solution.cpp
Add        RotateImage/solution.cpp
Add        InsertInterval/solution.cpp
Add        JumpGame/solution.cpp
Add        JumpGameII/solution.cpp
Add        LengthOfLastWord/solution.cpp
Add        MaximumSubarray/solution.cpp
Add        MergeIntervals/solution.cpp
Add        N-Queens-II/solution.cpp
Add        N-Queens/solution.cpp
Add        SpiralMatrix/solution.cpp