Using a loop, define a function anyRs(s) that
yields true if string s contains the character 'R'.
For example, anyRs("MyRabbit") = true, but
anyRs("myrabbit") = false. Write Define ... %Define
around the definition.
Be careful writing conditions. Do not try to compute
s_k when k > length(s), since
that will cause an error. Remember the
short-circuiting
property of the and and or operators.