java - digits in number

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public class Toast { static int[] digits_in_number_string_method(long number) { // return String.valueOf(number).chars().map(i -> i - '0').toArray() char[] chars = String.valueOf(Math.abs(number)).toCharArray(); int[] array = new int[chars.length]; for (int i = 0; i < array.length; i++) array[i] = chars[i] - '0'; if(number < 0) array[0] *= -1; return array; } }

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import java.util.Arrays; public class Toast { public static void main(String[] args) { System.out.println(Arrays.toString(digits_in_number(-1234))); } static int[] digits_in_number(long number) { int size = numberOfDigits(number); if(size == 1) return new int[]{(int)number}; int[] array = new int[size]; long n = Math.abs(number); for (int i = 1; i <= size; i++) { array[size - i] = (int) (n%10); n /= 10; } if(number < 0) array[0] *= -1; return array; } static int numberOfDigits(long number) { if(number < 10 && number > -10) return 1; int size = 2; long n = Math.abs(number); for (int i = 10; ; i *= 10) { if(n >= i && n < i*10) break; size++; } return size; } }

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