follow(A)={a,b}
follow(B)=follow(S)=follow(A)={a,b}
follow(A) is pretty straight forward
follow(B) is this because since it can be seen that it is equal to
follow(S), as follow B in the grammar does not have anything so hence it is
equal to the production that resulted it and hence follow(S) and s
Can someone explain how this code works ...
void sieve(int n)
{
int x=n/2, y=(int)sqrt(n);
arr[1]=2;
for(int i=1;i<=x;i++)
prime[i]=false;
for (int i=1; i<=y; i++)
{
if (!prime[i])
{
for (int j=3*i+1;j<=x;j+=(2*i+1)
