Rotate Left

The two sets of output below show the results of successive circular rotations of a vector. One set of data is for a vector of integers, and the second is for a vector of strings.

$\backslash$table$[[1,3,5,7],[3,5,7,1],[5,7,1,3],[7,1,3,5]]$

a b c d e

b c d e a

c d e a b

d e a b c

e a b c d

Write two template functions that can be used to rotate and output a vector of a generic type:

void rotateLeft$($vector $($:$T$:$)$&$v)$

void output$($vector $v$