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Find value of k-th bit in binary representation
• Difficulty Level : Easy
• Last Updated : 24 May, 2021

Given a number n and k (1 <= k <= 32), find the value of k-th bit in the binary representation of n. Bits are numbered from right (Least Significant Bit) to left (Most Significant Bit).

Examples :

```Input :
n = 13, k = 2
Output :
0
Explanation:
Binary representation of 13 is 1101.
Second bit from right is 0.

Input :
n = 14, k = 3
Output :
1
Explanation:
Binary representation of 14 is 1110.
Third bit from right is 1.```

Approach:
1) Find a number with all 0s except k-th position. We get this number using ( 1 << (k-1) ). For example if k = 3, then ( 1 << 2) gives us (00..00100).
2) Do bitwise and of above-obtained number with n to find if k-th bit in n is set or not.

Below is the implementation of the above approach:

## C++

 `// CPP program to find k-th bit from right``#include ``using` `namespace` `std;` `void` `printKthBit(unsigned ``int` `n, unsigned ``int` `k)``{``    ``cout << ((n & (1 << (k - 1))) >> (k - 1));``}` `// Driver Code``int` `main()``{``    ``unsigned ``int` `n = 13, k = 2;``  ` `    ``// Function Call``    ``printKthBit(n, k);``    ``return` `0;``}`

## Java

 `// Java program to find``// k-th bit from right``import` `java.io.*;` `class` `GFG {``    ``static` `void` `printKthBit(``long` `n, ``long` `k)``    ``{``        ``System.out.println(``            ``((n & (``1` `<< (k - ``1``))) >> (k - ``1``)));``    ``}` `    ``// Driver Code``    ``public` `static` `void` `main(String[] args)``    ``{``        ``long` `n = ``13``, k = ``2``;``      ` `        ``// Function Call``        ``printKthBit(n, k);``    ``}``}` `// This code is contributed by anuj_67.`

## Python3

 `# Python 3 program to find``# k-th bit from right` `def` `printKthBit(n, k):` `    ``print``((n & (``1` `<< (k ``-` `1``))) >> (k ``-` `1``))` `# Driver Code``n ``=` `13``k ``=` `2` `# Function Call``printKthBit(n, k)` `# This code is contributed by Smitha`

## C#

 `// C# program to find k-th bit from right``using` `System;` `class` `GFG {` `    ``static` `void` `printKthBit(``long` `n, ``long` `k)``    ``{``        ``Console.WriteLine((n & (1 << (k - 1))) >> (k - 1));``    ``}` `    ``// Driver Code``    ``public` `static` `void` `Main()``    ``{``        ``long` `n = 13, k = 2;``        ` `        ``// Function Call``        ``printKthBit(n, k);``    ``}``}` `// This code is contributed by anuj_67.`

## PHP

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## Javascript

 ``
Output :
`0`

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