Merge pull request #366 from Rachana040/master

Updated Matrix.java, added Transpose of a Matrix

Others/PowerOfTwoOrNot.java

@@ -0,0 +1,33 @@
+import java.util.Scanner;
+
+/**
+*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) {
+	
+		Scanner sc = new Scanner(System.in);
+		System.out.println("Enter the number");
+		int num = sc.nextInt();
+		boolean isPowerOfTwo = checkIfPowerOfTwoOrNot(num);
+		if (isPowerOfTwo) {
+			System.out.println("Number is a power of two");
+		} else {
+			System.out.println("Number is not a power of two");
+		}
+	}
+
+
+/**
+* Checks whether given number is power of two or not.
+*
+* @param number
+* @return boolean
+*/
+public static boolean checkIfPowerOfTwoOrNot(int number) {
+		return number != 0 && ((number & (number-1)) == 0);
+	}
+
+}