CR-MicroLabs-Loops-NumbersTrianglesTables/TriangleUtilities.java

 import java.lang.StringBuilder;

public class TriangleUtilities {

    public static String getRow(int numberOfStars) {
        
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < numberOfStars; i++) {
            sb.append("*");
        }
        return sb.toString();
    }
    
    public static String getTriangle(int numberOfRows) {
        
        StringBuilder sb = new StringBuilder();  
        for (int i = 0; i < numberOfRows; i++) {
            sb.append(getRow(i+1));
            sb.append("\n");
        }
        return sb.toString();
    }


    public static String getSmallTriangle() {
        
        StringBuilder sb = new StringBuilder();  
        for (int i = 0; i < 4; i++) {
            sb.append(getRow(i+1));
            sb.append("\n");
        }
        System.out.println(sb.toString());
        return sb.toString();
    }
    

    public static String getLargeTriangle() {
        
        StringBuilder sb = new StringBuilder();  
        for (int i = 0; i < 9; i++) {
            sb.append(getRow(i+1));
            sb.append("\n");
        }
        return sb.toString();
    }
}