codingChallenge

Alone.java

@@ -0,0 +1,23 @@
+
+public class Alone {
+  public static void main(String[] args) {
+
+    int[] ar = { 1, 1, 1, 2, 2, 2, 3, 3, 4, 4, 4, 4, 4, 5, 6, 6, 6, 7, 7, 7, 8, 8, 8, 9 };
+    lonelyNum(ar);
+  }
+
+  public static void lonelyNum(int[] arr) {
+    for (int i = 0; i < arr.length; i++) {
+      int count = 0;
+
+      for (int k = 0; k < arr.length; k++) {
+        if (arr[i] == arr[k]) {
+          count++;
+        }
+      }
+      if (count == 1) {
+        System.out.println(arr[i]);
+      }
+    }
+  }
+}