A number N is given. We need to print its ‘K’th Least Significant Bit.**Examples :**

Input : num = 10, k = 4 Output : 1 Explanation : Binary Representation of 10 is 1010. 4th LSB is 1. Input : num = 16, k = 3 Output : 0 Explanation : Binary Representation of 16 is 10000. 3rd LSB is 0.

We can easily solve this problem by following steps :

- Shift the number ‘1’ (K-1) times left.
- This will yield a number with all unset bits but the ‘K’th bit. Now, we’ll perform logical AND of the shifted number with given number.
- All bits except the ‘K’th bit will yield 0, and ‘K’th bit will depend on the number. This is because, 1 AND 1 is 1. 0 AND 1 is 0.

## C++

`// CPP code to print 'K'th LSB` `#include <bits/stdc++.h>` `using` `namespace` `std;` `//Function returns 1 if set, 0 if not` `bool` `LSB(` `int` `num, ` `int` `K)` `{` ` ` `return` `(num & (1 << (K-1)));` `}` `//Driver code` `int` `main()` `{` ` ` `int` `num = 10, K = 4;` ` ` ` ` `//Function call` ` ` `cout << LSB(num, K);` ` ` ` ` `return` `0;` `}` |

## java

`// java code to print 'K'th LSB` `import` `java .io.*;` `class` `GFG {` ` ` ` ` `// Function returns 1 if set, 0 if not` ` ` `static` `boolean` `LSB(` `int` `num, ` `int` `K)` ` ` `{` ` ` `boolean` `x = (num & (` `1` `<< (K-` `1` `))) != ` `0` `;` ` ` `return` `(x);` ` ` `}` ` ` ` ` `// Driver code` ` ` `public` `static` `void` `main(String[] args)` ` ` `{` ` ` `int` `num = ` `10` `, K = ` `4` `;` ` ` ` ` `//Function call` ` ` `if` `(LSB(num, K))` ` ` `System.out.println(` `"1"` `) ;` ` ` ` ` `else` ` ` `System.out.println(` `"0"` `);` ` ` `}` `}` `// This code is contributed by Anuj_67` |

## Python

`# Python code to print 'K'th LSB` `# Function returns 1 if set, 0 if not` `def` `LSB(num, K):` ` ` `return` `bool` `(num & (` `1` `<< (K ` `-` `1` `) ))` `# Driver code` `num, k ` `=` `10` `, ` `4` `res ` `=` `LSB(num, k)` `if` `res :` ` ` `print` `1` `else` `:` ` ` `print` `0` `#This code is contributed by Sachin Bisht` |

## C#

`// C# code to print 'K'th LSB` `using` `System;` `class` `GFG {` ` ` ` ` `// Function returns 1 if set, 0 if not` ` ` `static` `bool` `LSB(` `int` `num, ` `int` `K)` ` ` `{` ` ` `bool` `x = (num & (1 << (K-1))) != 0;` ` ` `return` `(x);` ` ` `}` ` ` ` ` `// Driver code` ` ` `static` `void` `Main()` ` ` `{` ` ` `int` `num = 10, K = 4;` ` ` ` ` `//Function call` ` ` `if` `(LSB(num, K))` ` ` `Console.Write(` `"1"` `) ;` ` ` ` ` `else` ` ` `Console.Write(` `"0"` `);` ` ` `}` `}` `// This code is contributed by Anuj_67` |

## PHP

`<?php` `// PHP code to print 'K'th LSB` `// Function returns 1 if set, 0 if not` `function` `LSB(` `$num` `, ` `$K` `)` `{` ` ` `return` `(` `$num` `& (1 << (` `$K` `- 1)));` `}` `// Driver code` `$num` `= 10;` `$K` `= 4;` `$r` `= LSB(` `$num` `, ` `$K` `);` `if` `(` `$r` `)` ` ` `echo` `'1'` `;` `else` ` ` `echo` `'0'` `;` `// This code is contributed by Ajit` `?>` |

## Javascript

`<script>` ` ` `// Javascript code to print 'K'th LSB` ` ` ` ` `// Function returns 1 if set, 0 if not` ` ` `function` `LSB(num, K)` ` ` `{` ` ` `let x = (num & (1 << (K-1))) != 0;` ` ` `return` `(x);` ` ` `}` ` ` ` ` `let num = 10, K = 4;` ` ` ` ` `//Function call` ` ` `if` `(LSB(num, K))` ` ` `document.write(` `"1"` `) ;` ` ` `else` ` ` `document.write(` `"0"` `);` ` ` `</script>` |

**Output :**

1

This article is contributed by **Rohit Thapliyal**. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

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