# Find value of k-th bit in binary representation

Given a number n and k (1 <= k <= 32), find value of k-th bit in 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 Binary representation of 13 is 1101. Second bit from right is 0. Input : n = 14, k = 3 Output : 1 Binary representation of 14 is 1110. Third bit from right is 1.

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.

## C++

`// CPP program to find k-th bit from right ` `#include <bits/stdc++.h> ` `using` `namespace` `std; ` ` ` `void` `printKthBit(unsigned ` `int` `n, unsigned ` `int` `k) ` `{ ` ` ` `cout << (n & (1 << (k-1))); ` `} ` ` ` `int` `main() ` `{ ` ` ` `unsigned ` `int` `n = 13, k = 2; ` ` ` `printKthBit(n, k); ` ` ` `return` `0; ` `} ` |

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## 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` `)))); ` ` ` `} ` ` ` ` ` `// Driver Code ` `public` `static` `void` `main (String[] args) ` `{ ` ` ` `long` `n = ` `13` `, k = ` `2` `; ` ` ` `printKthBit(n, k); ` `} ` `} ` ` ` `// This code is contributed by anuj_67. ` |

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## Python3

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

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## 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 << ` ` ` `(` `int` `)(k - 1)))); ` ` ` `} ` ` ` ` ` `// Driver Code ` ` ` `public` `static` `void` `Main () ` ` ` `{ ` ` ` `long` `n = 13, k = 2; ` ` ` ` ` `printKthBit(n, k); ` ` ` `} ` `} ` ` ` `// This code is contributed by anuj_67. ` |

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## PHP

`<?php ` `// PHP program to find ` `// k-th bit from right ` ` ` `function` `printKthBit(` `$n` `, ` `$k` `) ` `{ ` ` ` `echo` `(` `$n` `& (1 << (` `$k` `- 1))); ` `} ` ` ` `// Driver Code ` `$n` `= 13; ` `$k` `= 2; ` `printKthBit(` `$n` `, ` `$k` `); ` ` ` `// This code is contributed ` `// by anuj_67. ` `?> ` |

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**Output :**

0

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