- Data Structure
- Networking
- RDBMS
- Operating System
- Java
- MS Excel
- iOS
- HTML
- CSS
- Android
- Python
- C Programming
- C++
- C#
- MongoDB
- MySQL
- Javascript
- PHP
- Physics
- Chemistry
- Biology
- Mathematics
- English
- Economics
- Psychology
- Social Studies
- Fashion Studies
- Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Golang program to turn off the k’th bit in a number.
Example
Consider n = 20(00010100), k = 3 The result after turning off the 3rd bit => 00010000 & ^(1<<(3-1)) => 00010000 & ^(1 << 2) => 00010000 => 16s
Approach to solve this problem
Step 1 − Define a method, where n and k would be the arguments, return type is int.
Step 2 − Perform AND operation with n & ^(1<<(k-1)).
Step 3 − Return the obtained number.
Example
package main import ( "fmt" "strconv" ) func TurnOffKthBit(n, k int) int { return n & ^(1 << (k-1)) } func main(){ var n = 20 var k = 3 fmt.Printf("Binary of %d is: %s.\n", n, strconv.FormatInt(int64(n), 2)) newNumber := TurnOffKthBit(n, k) fmt.Printf("After turning off %d rd bit of %d is: %d.\n", k, n, newNumber) fmt.Printf("Binary of %d is: %s.\n", newNumber, strconv.FormatInt(int64(newNumber), 2)) }
Output
Binary of 20 is: 10100. After turning off 3 rd bit of 20 is 16. Binary of 16 is: 10000.
Advertisements