Write a function that accepts an array of 10 integers (between 0 and 9), that returns a string of those numbers in the form of a phone number.
Example:
Kata.createPhoneNumber(new int[] {1, 2, 3, 4, 5, 6, 7, 8, 9, 0}) // => returns "(123) 456-7890"
The returned format must be correct in order to complete this challenge.
Don't forget the space after the closing parenthesis!
Good Solution1:
public class Kata {
public static String createPhoneNumber(int[] numbers) {
return String.format("(%d%d%d) %d%d%d-%d%d%d%d",numbers[0],numbers[1],numbers[2],numbers[3],numbers[4],
numbers[5],numbers[6],numbers[7],numbers[8],numbers[9]);
}
}
Good Solution2:
public class Kata {
public static String createPhoneNumber(int[] numbers) {
return String.format("(%d%d%d) %d%d%d-%d%d%d%d", java.util.stream.IntStream.of(numbers).boxed().toArray());
}
}
Good Solution3:
import java.util.Arrays;
public class Kata {
private static String PHONE_FORMAT = "(%d%d%d) %d%d%d-%d%d%d%d";
public static String createPhoneNumber(int[] numbers) {
Integer[] numbersInt = Arrays.stream(numbers).boxed().toArray(Integer[]::new);
return String.format(PHONE_FORMAT, numbersInt);
}
}
