[R] Counting the number of integers at one swoop

[Kathie]

Dear R users,

I'd like to count the number of integers in a vector y.

Here is an example.

y <- c(0,1,1,3,3,3,5,5,6)

In fact, I know how to count the number of specific number in y.

sum(y==0) -> 1
sum(y==1) -> 2
sum(y==2) -> 0
sum(y==3) -> 3
sum(y==4) -> 0
sum(y==5) -> 2
sum(y==6) -> 1


However, in one computation I want to get this vector [1,2,0,3,0,2,1]. 

Thank you in advance.

Kathie



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