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feat: subject of wordfflip

DEV-3178-new-go-exercise-wordflip
zainabdnaya 2 years ago
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      subjects/wordflip/README.md

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subjects/wordflip/README.md

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# WordFlip
### Instructions
Write a function `WordFlip()` that receives a string and returns it with the first and last words flipped.
- Prints the Output followed by newline `\n`.
- If the string is empty, return `Invalid Output`.
- Ignore spaces if it's more then onr space in between words and all spaces in the edge of the words or sentences.
### Expected function
```go
func WordFlip(str string) string {
}
```
### Usage
Here is a possible program to test your function:
```go
package main
import (
"fmt"
)
func main() {
fmt.Print(WordFlip("First second last"))
fmt.Print(WordFlip(""))
fmt.Print(WordFlip(" ")) //all spaces
fmt.Print(WordFlip(" hello all of you! "))
}
```
And its output :
```go
$ go run . | cat -e
last second First$
Invalid Output$
$
you! of all hello$
```
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