F( X , Y )
| X – Y | x < 0 | 
| X – Y | y < 0 | 
| f(x-1,y) + f(x,y-1) | else | 
C( N , R )
| 1 | N == R | 
| C (N,N) | R == 0 | 
| C (N-1,R-1) + C (N-1,R) | R > 0 | 
| 0 | else | 
Remember you can access array values with ‘First and ‘Last
i.e. A’First and A’Last
F( X , Y )
| X – Y | x < 0 | 
| X – Y | y < 0 | 
| f(x-1,y) + f(x,y-1) | else | 
C( N , R )
| 1 | N == R | 
| C (N,N) | R == 0 | 
| C (N-1,R-1) + C (N-1,R) | R > 0 | 
| 0 | else | 
Remember you can access array values with ‘First and ‘Last
i.e. A’First and A’Last