CheckWhetherKthBitIsSetOrNot.cpp

/*
Given a number N and a bit number K, check if Kth index bit of N is set or not. A bit is called set if it is 1. Position of set bit '1' should be indexed starting with 0 from LSB side in binary representation of the number.
Note: Index is starting from 0.
Example 1:

Input: N = 4, K = 0
Output: No
Explanation: Binary representation of 4 is 100,
in which 0th index bit from LSB is not set.
So, return false.
Example 2:

Input: N = 4, K = 2
Output: Yes
Explanation: Binary representation of 4 is 100,
in which 2nd index bit from LSB is set.
So, return true.
Example 3:

Input: N = 500, K = 3
Output: No
Explanation: Binary representation of 500 is
111110100, in which 3rd index bit from LSB is not set.
So, return false.

Your task:
You don't have to read input or print anything. Your task is to complete the function checkKthbit that takes n and k as parameters and returns either true (if kth bit is set) or false(if kth bit is not set).

Expected Time Complexity: O(1).
Expected Auxiliary Space: O(1).
*/


class Solution
{
    public:
    bool checkKthBit(int n, int k)
    {
        if(n&(1<<k)){
            return true;
        }
    return false;
    }
};