JSFiddle - React, Tailwind, and code Playground

by LyndseyB

JavaScript

var line = "2 7 15";

console.time("time");
line = line.split(" ");

var x = +line[0],
    y = +line[1],
    z = +line[2],
    i = 1,
    fb = "";

for(i; i<=z; i++) {    
    fb += ((i % y === 0 && i % x === 0) ? "FB" : (i % x === 0) ? "F" : (i % y === 0) ? "B" : i) + " ";
}

console.log(fb.substring(0, fb.length-1));
console.timeEnd("time");