changing display of lines

[peter_brickles]

i have a file which contains the following lines

apple - pears
oranges - bananas

is any way to get the file to swich so it displays

pears -apple
bananas - oranges

any help would be appreciated guys

[steeldriver]

Is the difference in whitespace (no space between the - and apple) significant? if not I'd probably do something like

awk '{print $3" - "$1}' file

or

awk '{print $3,$2,$1}' file