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## repeatalpha
### Instructions
Write a program called `repeat_alpha` that takes a `string` and displays it
repeating each alphabetical character as many times as its alphabetical index.
5 years ago
The result must be followed by a newline (`'\n'`).
`'a'` becomes `'a'`, `'b'` becomes `'bb'`, `'e'` becomes `'eeeee'`, etc...
The case remains unchanged.
5 years ago
If the number of arguments is different from 1, the program displays a newline (`'\n'`).
### Usage
```console
student@ubuntu:~/[[ROOT]]/repeatalpha$ go build
student@ubuntu:~/[[ROOT]]/repeatalpha$ ./repeatalpha "abc" | cat -e
abbccc
student@ubuntu:~/[[ROOT]]/repeatalpha$ ./repeatalpha "Choumi." | cat -e
CCChhhhhhhhooooooooooooooouuuuuuuuuuuuuuuuuuuuummmmmmmmmmmmmiiiiiiiii.$
student@ubuntu:~/[[ROOT]]/repeatalpha$ ./repeatalpha "abacadaba 01!" | cat -e
abbacccaddddabba 01!$
student@ubuntu:~/[[ROOT]]/repeatalpha$ ./repeatalpha | cat -e
$
student@ubuntu:~/[[ROOT]]/repeatalpha$ ./repeatalpha "" | cat -e
$
student@ubuntu:~/[[ROOT]]/repeatalpha$
```