>>263 ゴメン、$a[2]$a[0]はbug、訂正

>>249 Perl5
use feature qw{signatures say};
sub strot_cmp($a, $b) {
 say "入力 $a $b";
 @a = split $b, "$a$a", 3;
 say "出力 ", ("$a[1]$a[0]") eq $b ? 'true' : 'false';
}
strot_cmp qw{abcde deabc};
strot_cmp qw{abcde cdeba};
strot_cmp qw{aaaaa aaa};