java-open-source
diff --git a/‎Maths/PowerOfTwoOrNot.java‎
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diff --git a/‎Others/PowerOfTwoOrNot.java‎
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+package Maths;
+
+/**
+ * A utility to check if a given number is power of two or not.
+ * For example 8,16 etc.
+ */
+
+public class PowerOfTwoOrNot {
+
+    public static void main(String[] args) {
+        assert !checkIfPowerOfTwoOrNot(0);
+        assert checkIfPowerOfTwoOrNot(1);
+        assert checkIfPowerOfTwoOrNot(8);
+        assert checkIfPowerOfTwoOrNot(16);
+        assert checkIfPowerOfTwoOrNot(1024);
+    }
+
+
+    /**
+     * Checks whether given number is power of two or not.
+     *
+     * @param number the number to check
+     * @return {@code true} if given number is power of two, otherwise {@code false}
+     */
+    public static boolean checkIfPowerOfTwoOrNot(int number) {
+        return number != 0 && ((number & (number - 1)) == 0);
+    }
+}