for working in RStudio
See the complete set of shortcuts for RStudio.
For a quick reference in RStudio press Alt + Shift + K
To create automatically enumerated strings use paste0 function:
a <- c("A", "B", "C")
b <- c("1", "2", "3")
paste0(a, b)## [1] "A1" "B2" "C3"paste0("A",b)## [1] "A1" "A2" "A3"