Create JavaHomeworks003.md

Author: eemustafasahin

JavaHomeworks/JavaHomeworks003.md

@@ -0,0 +1,75 @@
+```java
+package csd;
+
+class App {
+	public static void main(String [] args) 
+	{
+	   
+	    //...
+	   
+	}
+}
+
+class TripletPrimeNumTest{
+    public static void run()
+    {
+	java.util.Scanner kb = new java.util.Scanner(System.in);
+	System.out.println("üç basamaklı TripletPrimeNumbers:");
+	for(int i = 100; i < 1000; i++) {
+	    if(TripletPrimeNum.isTripletPrime(i)){
+		System.out.printf("%d -- %d%n",i,NumberUtil.getReverse(i));
+	    	
+	    }
+		
+	}
+    }
+}
+
+class TripletPrimeNum{
+    public static boolean isTripletPrime(int ival)
+    {
+	int reverseVal = NumberUtil.getReverse(ival);
+	if (reverseVal > ival)
+	    if (NumberUtil.isPrime(ival) && NumberUtil.isPrime(reverseVal))
+		    if (NumberUtil.isPrime(ival % 100) && NumberUtil.isPrime(reverseVal % 100))
+			    if (NumberUtil.isPrime(ival / 10) && NumberUtil.isPrime(reverseVal / 10))
+				     return true;
+	    return false;
+    }
+}
+
+class XPrimalityTest{
+    public static void run()
+    {
+	java.util.Scanner kb = new java.util.Scanner(System.in);
+	int ival;
+	for(;;){
+	    System.out.printf("Bir tam sayı giriniz:");
+	    ival = Integer.parseInt(kb.nextLine());
+	    if(xPrimality.xPrime(ival))
+	    System.out.printf("(%d) sayısı Xprime%n",ival);
+	    else
+		System.out.printf("(%d) sayısı Xprime değildir%n",ival);
+	    System.out.println("Çıkış için negatif bir sayı giriniz");
+	    if(ival < 0)
+		break;
+	    
+	}
+	System.out.println("Çıkış yaptınız....");
+    }
+}
+
+class xPrimality {
+    public static boolean xPrime(int ival)
+    {
+	
+	while ( NumberUtil.getDigitsCount(ival) > 2){
+	    if (!NumberUtil.isPrime(ival))
+		return false;
+	    ival = NumberUtil.getDigitsSum(ival);
+	}
+	
+	return NumberUtil.isPrime(ival);
+    }
+}
+```