Be the first user to complete this post

Add to List 
Multiply with power of 2 without using pow() or * operator
Objective: Given a number n and k, Calculate n * k^{2} without using pow() or *operator.
Example:
N = 3, k = 4 N*k^{2} = 48
Approach: Bit Manipulation
Left shift the number N by k.
For example, N = 3 Bit representation: 0 1 1 Left shift by k = 4 0 1 1 0 0 0 0 which is the representation of 48.
Java Code:
Output:
Number 3 Multiplied by 2^4 is: 48
Also Read about –
Also Read: