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Commit 84839877 authored by lbr's avatar lbr
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ForLoop

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public static class Main { public class Main {
public static boolean main(int number){ public static void main(String[] args) {
if (number < 0) number *= -1; System.out.println(sumFirstAndLastDigit(252));
String zahl = String.valueOf(number); System.out.println(sumFirstAndLastDigit(257));
String zahlRueckwaerts = new StringBuilder(zahl).reverse().toString(); System.out.println(sumFirstAndLastDigit(0));
int zahlInt = Integer.valueOf(zahl); System.out.println(sumFirstAndLastDigit(5));
int zahlRueckwaertsInt = Integer.valueOf(zahlRueckwaerts); System.out.println(sumFirstAndLastDigit(-10));
if (zahlInt == zahlRueckwaertsInt) {
return true; }
} public static int sumFirstAndLastDigit(int number) {
else { if (number < 0) return -1;
return false; String numberAlsString = String.valueOf(number);
} char ersterChar = numberAlsString.charAt(0);
int ersteZiffer = Character.getNumericValue(ersterChar);
int laengeVonNumberAlsString = numberAlsString.length();
char zweiterChar = numberAlsString.charAt(laengeVonNumberAlsString-1);
int letzteZiffer = Character.getNumericValue(zweiterChar);
return ersteZiffer+letzteZiffer;
} }
} }
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