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612 B
612 B
searchreplace
Instructions
Write a program that takes 3 arguments, the first argument is a string in which a letter (the 2nd argument) will be replaced by another one (the 3rd argument).
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If the number of arguments is different from 3, the program displays nothing.
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If the second argument is not contained in the first one (the string) then the program rewrites the
stringfollowed by a newline ('\n').
Usage
$ go run . "hella there" "a" "o"
hello there
$ go run . "hallo thara" "a" "e"
hello there
$ go run . "abcd" "z" "l"
abcd
$ go run . "something" "a" "o" "b" "c"
$