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README.md | 2 years ago |
README.md
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Instructions
Write a program that prints the previous letter and the next letter of the Latin alphabet.
- If the number of arguments is different from
1
, print a new line\n
. - If the length of the argument is different from
1
, print a new line\n
. - If the argument is not a letter, print a new line
\n
. - There are no letters to print before
a
or afterz
.
Usage
$ go run . | cat -e
$
$ go run . a | cat -e
ab$
$ go run . "B" | cat -e
ABC$
$ go run . "z" | cat -e
yz$
$ go run . "Hello World!" | cat -e
$
$ go run . "1" | cat -e
$