Sort vector by given requirement

Question

In mv , I want z at the first position ,the result as mv_sorted .How to handle it ? Thanks!

mv <- c('w','t','z','f')

mv_sorted <- c('z','w','t','f')

Answer 1

Try order

> mv[order(mv != "z")]
[1] "z" "w" "t" "f"


> mv[order(mv == "z", decreasing = TRUE)]
[1] "z" "w" "t" "f"