CR-MicroLabs-Loops-NumbersTrianglesTables/NumberUtilities.java

 


public class NumberUtilities {
    
    public static String getRange(int stop) {
        StringBuilder sb = new StringBuilder();
        for(int i=0; i<stop; i++) {
            sb.append(i);
            
        }
        return sb.toString();
       
    }
    
    public static String getRange(int start, int stop) {
        StringBuilder sb = new StringBuilder();
        for(int i = start; i < stop; i++) {
            sb.append(i);
        }
        return sb.toString();
    }


    public static String getRange(int start, int stop, int step) {
        StringBuilder sb = new StringBuilder();
        for(int i=start; i<stop; i+=step) {
            sb.append(i);
        }
        return sb.toString();
    }
    
    public static String getEvenNumbers(int start, int stop) {
        StringBuilder sb = new StringBuilder();
        for(int i = start; i < stop; i++) {
            if(i%2==0) {
            sb.append(i);}
    }
        return sb.toString();
    }



    public static String getOddNumbers(int start, int stop) {
        StringBuilder sb = new StringBuilder();
        for(int i = start; i < stop; i++) {
            if(i%2!=0) {
            sb.append(i);}
    }
        return sb.toString();
    }


    public static String getExponentiations(int start, int stop, int exponent) {
        StringBuilder sb = new StringBuilder();
        int exp = exponent;
        int answer = 0;
        for(int i=start; i<=stop; i++) {
            sb.append((int)Math.pow(i,exp));
        }
        return sb.toString();
    }
}