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## printmemory
### Instructions
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Write a function that takes `(arr [10]byte)`, and displays the memory as in the example.
After displaying the memory the function must display all the ASCII graphic characters. The non printable characters must be replaced by a dot.
The ASCII graphic characters are any characters intended to be written, printed, or otherwise displayed in a form that can be read by humans, present on the ASCII encoding.
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### Expected function
```go
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func PrintMemory(arr [10]byte) {
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}
```
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### Usage
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Here is a possible program to test your function :
```go
package main
import "piscine"
func main() {
piscine.PrintMemory([10]byte{'h', 'e', 'l', 'l', 'o', 16, 21, '*'})
}
```
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And its output :
```console
$ go run . | cat -e
68 65 6c 6c$
6f 10 15 2a$
00 00$
hello..*..$
$
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```