Create LonelyInteger.java

jumpman-cmd · web-flow · commit ac9d35ef98e8 · 2024-09-04T02:11:54.000+02:00
diff --git a/LonelyInteger.java b/LonelyInteger.java
@@ -0,0 +1,58 @@
+import java.io.*;
+import java.math.*;
+import java.security.*;
+import java.text.*;
+import java.util.*;
+import java.util.concurrent.*;
+import java.util.function.*;
+import java.util.regex.*;
+import java.util.stream.*;
+import static java.util.stream.Collectors.joining;
+import static java.util.stream.Collectors.toList;
+
+class Result
+{
+    /*
+     * Complete the 'lonelyinteger' function below.
+     *
+     * The function is expected to return an INTEGER.
+     * The function accepts INTEGER_ARRAY a as parameter.
+     */
+     
+     public static int lonelyinteger(List<Integer> a)
+     {
+         // Write your code here
+         
+         int arrayElementsSum = 0;
+         
+         for(int n : a)
+         {
+             arrayElementsSum ^= n;
+         }
+         
+         return arrayElementsSum;
+     }
+}
+
+public class LonelyInteger 
+{
+    public static void main(String[] args) throws IOException
+    {
+        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));
+        BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv("OUTPUT_PATH")));
+
+        int n = Integer.parseInt(bufferedReader.readLine().trim());
+
+        List<Integer> a = Stream.of(bufferedReader.readLine().replaceAll("\\s+$", "").split(" "))
+            .map(Integer::parseInt)
+            .collect(toList());
+
+        int result = Result.lonelyinteger(a);
+
+        bufferedWriter.write(String.valueOf(result));
+        bufferedWriter.newLine();
+
+        bufferedReader.close();
+        bufferedWriter.close();
+    }
+}
