R: Creating an alphanumeric sequence with fixed length numbers

Question

I need to create an alphanumeric sequence as follows. The following code creates the sequence as M_1, M_2, ... etc

paste0("M_",seq(1:100))

I need all the numbers to appear as 3 digit numbers. i.e. M_001, M_002 etc

Answer 1

We can use sprintf

sprintf("M_%03d", 1:100)