CR-MicroLabs-Loops-NumbersTrianglesTables/NumberUtilities.java

 import java.lang.*;


public class NumberUtilities {
    //private static String str = "";
    
    public static String getRange(int stop) {
        String str = "";
        for(int i=0; i<stop; i++) {
            str += i;
        }
        return str;
    }
    
    public static String getRange(int start, int stop) {
        String str = "";
        for(int i=start;i<stop;i++)
            str += i;
        return str;
    }


    public static String getRange(int start, int stop, int step) {
        String str = "";
        for(int i=start;i<stop;i+=step)
            str += i;
        return str;
    }
    
    public static String getEvenNumbers(int start, int stop) {
        String str = "";
        for(int i=start;i<stop;i++){
            if( i%2==0)
                str += i;
        }
        return str;
    }


    public static String getOddNumbers(int start, int stop) {
        String str = "";
        for(int i=start;i<stop;i++){
            if(i%2!=0)
                str += i;
        }
        return str;
    }


    public static String getExponentiations(int start, int stop, int exponent) {
        String str = "";
        for(int i=start;i<=stop;i++)
            str += (int)Math.pow(i,exponent);
        return str;
    }
}