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Subject(rot-arg-n):add README
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## rot-arg-n
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### Instructions
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Write a program that takes arguments from the command line and rotates them by the number in the first argument.
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- If the number of arguments is less than 3 print (`'\n'`)
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- If the first argument is not a number, the program should print `"Error\n"`
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- If the first argument is negative, the program should print `"Error\n"`
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- If the first argument is zero, the program should print the original arguments
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- Prints the rotated arguments with a space between each argument and a newline at the end.
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### Usage
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```console
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$ go run . | cat -e
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$
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$ go run . 1 2 3 4 5 | cat -e
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3 4 5 2$
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$ go run . 2 "Hello" "World" | cat -e
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Hello World$
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$ go run . -1 2 3 4 5 | cat -e
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Error$
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$ go run . 0 2 3 4 5 | cat -e
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2 3 4 5$
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$ go run . 3 "Hello" "World" | cat -e
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World Hello$
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```
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