In the decimal number system, ugly numbers are those positive integers whose only prime factors are 2, 3 or 5.
For example − Integers from 1 to 10 are all ugly numbers, 12 is an ugly number as well.
Our job is to write a JavaScript function that takes in a Number and determines whether it is an ugly number or not.
Let's write the code for this function −
Example
const num = 274; const isUgly = num => { while(num !== 1){ if(num % 2 === 0){ num /= 2; } else if(num % 3 === 0) { num /= 3; } else if(num % 5 === 0) { num /= 5; } else { return false; }; }; return true; }; console.log(isUgly(num)); console.log(isUgly(60)); console.log(isUgly(140));
Output
The output in the console will be −
false true false