# Exercise: swap
#
# The `swap` word exchanges the top two values on the stack.
#
# Stack effect: ( a b -- b a )
#
# Example:
#   1 2 swap    # Stack: ( 2 1 )
#
# Your task: Use `swap` to put 20 on top and 10 below.
# When done, delete the marker line below.

# I AM NOT DONE

: test-swap ( -- )
    20 10
    # Your code here - add swap
    # Do not edit below this line
    20 test.assert-eq
    10 test.assert-eq
;
