The regex solutions seem to be simplest but here are a couple of alternatives. Using split, join and a slice.

$ perl -le '
$str = q{yands};
$str = join q{}, ( split m{}, $str )[ -1, 1 .. length( $str ) - 2, 0 ]
+;
print $str;'
sandy
$

[download]

Using substr.

$ perl -le '
$str = q{yands};
substr( $str, 0, 1 ) = substr $str, length( $str ) - 1, 1, substr $str
+, 0, 1;
print $str;'
sandy
$

[download]

I hope this is of interest.

Cheers,

JohnGG

In reply to Re: Swap the characters by johngg
in thread Swap the characters by sandy1028

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