Powers of Two

ardallie · ardallie · commit 155a3ee960ad · 2021-08-15T12:35:26.000+01:00
diff --git a/src/easy/PowersOfTwo.java b/src/easy/PowersOfTwo.java
@@ -0,0 +1,35 @@
+package easy;
+
+/**
+ * Have the function PowersofTwo(num) take the num parameter being passed
+ * which will be an integer and return the string true if it's a power of two.
+ * If it's not return the string false.
+ * For example if the input is 16 then your program should return the string true
+ * but if the input is 22 then the output should be the string false.
+ */
+public class PowersOfTwo {
+
+  /**
+   * Powers of Two function.
+   *
+   * @param num input number
+   * @return the string true if it's a power of two.
+   */
+  private static String powerOfTwo(int num) {
+    int bitwise = num & num - 1;
+    return num != 0 && bitwise == 0 ? "true" : "false";
+  }
+
+  /**
+   * Entry point.
+   *
+   * @param args command line arguments
+   */
+  public static void main(String[] args) {
+    var result1 = powerOfTwo(15);
+    System.out.println(result1);
+    var result2 = powerOfTwo(64);
+    System.out.println(result2);
+  }
+
+}
