From 901cce78cff5c13ded1ac3af0086e176f56e2599 Mon Sep 17 00:00:00 2001
From: Tim Tersch <ttersch@outlook.de>
Date: Thu, 27 Aug 2020 11:00:05 +0200
Subject: [PATCH] xor

---
 Arrays.java | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/Arrays.java b/Arrays.java
index 12734a4..cc5e022 100644
--- a/Arrays.java
+++ b/Arrays.java
@@ -212,7 +212,19 @@ public class Arrays {
      * Für ein leeres Array wird <code>false<code> zurück gegeben.
      */
     public boolean xor( boolean[] pArray ) {
-        return true;
+        if (pArray == null || pArray.length == 0) {
+            return false;
+        }
+        int numberOfTrue = 0;
+        for (boolean b : pArray) {
+            if (b) {
+                numberOfTrue++;
+            }
+        }
+        if (numberOfTrue == 1) {
+            return true;
+        }
+        return false;
     }
 
     /**