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 check if k’th bit is set for a given number or not.
Examples
Consider n = 20(00010100), k = 3
So, the result after turning off the 3rd bit => 00010000 & (1 << (4-1)) != 0
Approach to solve this problem −
Step 1 − Define a method, where n and k would be the arguments, returns type is int.
Step 2 − Perform AND operation with n & (1<<(k-1)).
Step 3 − If obtained number is not 0 then Kth of n is set else not set.
Example
package main
import (
"fmt"
"strconv"
)
func CheckKthBitSet(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))
flag := CheckKthBitSet(n, k)
if flag !=0 {
fmt.Printf("%d rd bit of %d is aleady set.\n", k, n)
} else {
fmt.Printf("%d rd bit of %d is not set.\n", k, n)
}
}Output
Binary of 20 is: 10100. 3 th bit of 20 is aleady set.
Updated on: 17-Mar-2021
1K+ Views
Advertisements