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70 lines
879 B
70 lines
879 B
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## Compact
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### Instructions
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Write a function `Compact` that takes a pointer to a slice of `string` as the argument.
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This function must:
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- Return the number of elements with non-zero value.
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- Compact, i.e., delete the elements with zero-values in the slice.
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### Expected functions
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```go
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func Compact(ptr *[]string) int {
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}
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```
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### Usage
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Here is a possible program to test your function :
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```go
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package main
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import (
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"fmt"
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piscine ".."
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)
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const N = 6
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func main() {
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a := make([]string, N)
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a[0] = "a"
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a[2] = "b"
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a[4] = "c"
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for _, v := range a {
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fmt.Println(v)
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}
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fmt.Println("Size after compacting:", piscine.Compact(&a))
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for _, v := range a {
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fmt.Println(v)
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}
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}
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```
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And its output :
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```console
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student@ubuntu:~/[[ROOT]]/test$ go build
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student@ubuntu:~/[[ROOT]]/test$ ./test
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a
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b
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c
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Size after compacting: 3
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a
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b
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c
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student@ubuntu:~/[[ROOT]]/test$
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```
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