Method count2sInRange

java/Chapter 18/Question18_4/Question.java:22–29

(int number)

	}
	
	public static int count2sInRange(int number) {
		int count = 0;
		int len = String.valueOf(number).length();
		for (int digit = 0; digit < len; digit++) {
			count += count2sInRangeAtDigit(number, digit);
		}
		return count;
	}
	
	public static int count2sR(int n) {	
		/* Alternate, messier, solution */