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; ` `} ` |

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## 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 ` |

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## 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 ` |

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## 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 ` |

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## 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 ` `?> ` |

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**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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