Question

How to check whether a number is a perfect cube root in JavaScript

Answer 1

// The cube root is a whole number. For example, 27 is a perfect cube, as ∛27 or (27)**1/3 = 3

function isPerfectCubeRoot(x) {
    x = Math.abs(x);
        
    const cubeRoot = Math.round(Math.pow(x, 1.0 / 3.0));
        
    return Math.pow(cubeRoot, 3) === x;
}

console.log(isPerfectCubeRoot(16));
console.log(isPerfectCubeRoot(64));
console.log(isPerfectCubeRoot(27));
console.log(isPerfectCubeRoot(25));
console.log(isPerfectCubeRoot(-64));
console.log(isPerfectCubeRoot(-27));
console.log(isPerfectCubeRoot(729));

   
 
/*
run:
        
false
true
true
false
true
true
true
        
*/

 

Learn & Practice Python
with the most comprehensive set of 13 hands-on online Python courses
Start now