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
Nearest power 2 of a number - JavaScript
We are required to write a JavaScript function that takes in a number and returns a number that can be represented as a power of 2 which is nearest to the input number.
For example −
If the input number if 365, then the output should be 256, because 256 is the nearest such number to 365 which can be represented as 2^n for some whole number value of n.
Example
Let’s write the code for this function −
const num = 365;
const nearestPowerOfTwo = num => {
// dealing only with non-negative numbers
if(num < 0){
num *= -1;
}
let base = 1;
while(base < num){
if(num - base < Math.floor(base / 2)){
return base;
};
base *= 2;
};
return base;
};
console.log(nearestPowerOfTwo(num));Output
The output in the console: −
256
Updated on: 15-Sep-2020
682 Views
Advertisements