Dynamic Programming, Programming, Algorithms, Data, Coding Interviews.
and 1st column or (0,0). You can move either downward(D) or rightward(R). So problem is to find the total number of paths starting from the first cell to the last cell i.e. (N, M). Solution via Combinatorics We can observe one thing clearly: if we have to reach form (0,0) to (N, M), we have to move