geändert am 21.11.2023 um 15:27

src/Praktikum03/Zahlenfilter.java

@@ -0,0 +1,43 @@
+package Praktikum03;
+
+
+public class Zahlenfilter {
+
+    public static void main(String[] args) {
+        int upper_limit = 200;
+        if (args.length > 0)
+            upper_limit = Integer.parseInt(args[0]);
+        Zahlenfilter z = new Zahlenfilter(upper_limit);
+        z.printNumber();
+    }
+
+    private int boundary;
+
+    private Zahlenfilter(int limit){
+        boundary = limit;
+    }
+
+    private void printNumber(){
+        for(int i = 1; i <=boundary; i++){
+            if(filter(i))
+                System.out.println(i);
+        }
+    }
+
+    public static boolean filter(int i){
+        return !(checkDivisibleBy5(i) || checkEndsWith9(i) || checkSumDivisibleBy3(i, i-1));
+    }
+
+    public static boolean checkDivisibleBy5(int i) {
+        return(i % 5 == 0);
+
+    }
+
+    public static boolean checkEndsWith9(int i){
+        return(i % 10 == 9);
+    }
+
+    public static boolean checkSumDivisibleBy3(int i, int j){
+        return((i+j) % 3 == 0);
+    }
+}