We are required to write a JavaScript function that takes in a number and returns true if it is a Pronic number otherwise returns false.
A Pronic number is a number which is the product of two consecutive integers, that is, a number of the form −
n(n + 1)
Example
The code for this will be −
const num = 132; const isPronic = num => { let nearestSqrt = Math.floor(Math.sqrt(num)) - 1; while(nearestSqrt * (nearestSqrt + 1) <= num){ if(nearestSqrt * (nearestSqrt+1) === num ){ return true; }; nearestSqrt++; }; return false; }; console.log(isPronic(num));
Output
The output in the console −
true