sample.java

public static void main(String[] args) {
        System.out.println("Üçgen hesaplama: " + calculateTriangle(18));
    }
    
    static String calculateTriangle(int sum) {
        int dividedAngle = sum % 3;
        int[] angles = {dividedAngle, dividedAngle, dividedAngle};
        int previousAngle = 0;
        int[] matchedAngles = new int[2];
        for(int i=0; i<angles.length; i++) {
            if(previousAngle == i) {
                 matchedAngles[i] = i;
            }
           previousAngle = i;
        }
        
        if(matchedAngles.length == 2) {
           return "İkizkenar üçgen";
        }
       
        if (sum % 3 == 0) {
            return "Eşkenar üçgen";
        }
        
        
        return "Sıradan üçgen";
    }