/* Fisher Number A Fisher number is an integer whose multipliers are equal to the number's cube. For example, 12 is a Fisher number, because 12^3 = 2 x 3 x 4 x 6 x 12. For example: Input: 12 Output: true (12^3 = 2 x 3 x 4 x 6 x 12) Input: 8 Output: false (8^3 != 2 x 4 x 8) Write a program to check if the user input is a Fisher number or not. */ class FisherNumber { constructor(number) { this._number = number; this._factors = []; for(let i = 1; i <= this._number; i++) { if(number % i == 0) { this._factors.push(i); } } } get number(){return this._number;} get factors(){return this._factors;} numberCubed() { return Math.pow(this._number, 3); } factorsProduct() { let product = 1; for(let i = 0; i < this._factors.length; i++) { product *= this._factors[i]; } return product; } isFisherNumber() { const cube = this.numberCubed(); const product = this.factorsProduct(); return (cube == product); } } function getInput(input) { const fisherNumber = new FisherNumber(input); let result = "Number: " + input; let factorsText = ""; for(let i = 0; i < fisherNumber.factors.length; i++) { factorsText += fisherNumber.factors[i]; if(i != fisherNumber.factors.length - 1) { factorsText += ", "; } } result += "
Factors: " + factorsText; result += "
Factors Product: "; for(let i = 0; i < fisherNumber.factors.length; i++) { result += fisherNumber.factors[i]; if(i != fisherNumber.factors.length - 1) { result += " x "; } else { result += " = " } } result += fisherNumber.factorsProduct(); result += "
Number Cubed: " + input + "^3 = " + fisherNumber.numberCubed(); result += "
Is a Fisher Number: " + fisherNumber.isFisherNumber(); output.innerHTML = result; return false; //prevent form submission } class Circle { constructor(x, y, r, dx, dy) { this.x = x; this.y = y; this.r = r; this.dx = dx; this.dy = dy; } draw(c) { c.beginPath(); c.arc(this.x,this.y,this.r,0,Math.PI * 2, false); c.strokeStyle = "rgba(0,150,200,1)"; c.stroke(); c.fillStyle = "rgba(0,150,200,0.4)"; c.fill(); } update() { if(this.x + this.r > innerWidth || this.x - this.r < 0) { this.dx = -this.dx; } if(this.dy > 0) { this.dy = -this.dy; } this.x += this.dx; this.y += this.dy; if(this.y <= 0) { this.y = innerHeight; } } } window.onload = function() { const canvas = document.querySelector("canvas"); canvas.width = window.innerWidth; canvas.height = window.innerHeight; const ctx = canvas.getContext("2d"); const circles = []; for(let i = 0; i < 100; i++) { let r = Math.random() * 30, x = Math.random() * (innerWidth - r * 2) + r, y = Math.random() * (innerHeight - r * 2) + r, dx = (Math.random() - 0.5) * 2, dy = (Math.random() - 0.5) * 4; circles.push(new Circle(x, y, r, dx, dy)); const output = document.getElementById("output"); } function animate() { requestAnimationFrame(animate); ctx.clearRect(0,0,innerWidth,innerHeight); for(let i = 0; i < circles.length; i++) { circles[i].update(); circles[i].draw(ctx) } } animate(); }

[Challenge] Fisher Numbers