public class NumberUtilities { public static String getRange(int stop) { return null; } public static String getRange(int start, int stop) { return null; } public static String getRange(int start, int stop, int step) { return null; } public static String getEvenNumbers(int start, int stop) { return null; } public static String getOddNumbers(int start, int stop) { return null; } public static String getExponentiations(int start, int stop, int exponent) { return null; } }