Check if the Kth bit it set!

Example 1:
n= 5
k = 1
binary representation of 5 : 101
1st bit from right is set
therefore output = YES

Example 2:
n = 8
k = 2
binary representation of 8 : 1000
2nd bit from right is not set
therefore output = NO

Solution using Left Shift operator:

Solution using Right Shift Operator: