Add following question about 2 dimensional matrix:
1. rotate matrix to 90 degree MatrixBasicOperation
2. create a spiral matrix or print matrix in spiral order, MatrixBasicOperation
3. reset entire row or col when some element is zero, MatrixBasicOperation
4. YangMatrix, push, pop and search
5. max matrix with black border MaxMatrixWithBlackBorder
6. sub matrix have max sum MaxSubMatrix