BlueJ.NumbersTrianglesTables/NumberUtilities.java at master · rond556/BlueJ.NumbersTrianglesTables · GitHub

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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 == 1)
            sb.append(i);
        }
        return sb.toString();
    }

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