// program to find the factors of an integer // take input const num = prompt('Enter a positive number: '); console.log(`The factors of ${num} is:`); // looping through 1 to num for(let i = 1; i <= num; i++) { /
Write a function to calculate the factorial of a number. The factorial of a non-negative integer n is the product of all positive integers less than or equal to n. For example, the factorial of 3 is 3 * 2 * 1 = 6. Return the factorial of the input number num. 1 2 3 function...
Squared concatenation of a Number in JavaScript Decimal count of a Number in JavaScript Separating digits of a number in JavaScript Checking for a Doubleton Number in JavaScript Digit sum upto a number of digits of a number in JavaScript Returning number of digits in factorial of a number in ...
var number = window.prompt('请输入一个数字'); if (isNaN(number)) { alert('请重新输入一个数字'); continue; } number = number - 0; if (arr.indexOf(number) == -1) { arr.push(number); } } while (arr.length < length); return arr.sort(function (a, b) { return a - b; }...
triangleNumber Factorial Factors isPrime Greatest Common Divisor Lowest Common Multiple JavaScript中缺失的数学方法:求和(Sum) 你可能还记得在学校中,“sum”是“add”的同义词。例如,如果我们对数字1、2和3求和,实际上是指1 + 2 + 3。 我们的求和函数将涉及对数组中所有值进行求和。
function factorial(n) { // A function to compute factorials let product = 1; // Start with a product of 1 while(n > 1) { // Repeat statements in {} while expr in () is true product *= n; // Shortcut for product = product * n; ...
log(factorial(3)); // 6 当将函数作为参数传递给另一个函数时,函数表达式很方便。下面的例子演示了一个叫 map 的函数,该函数接收函数作为第一个参数,接收数组作为第二个参数: jsCopy to Clipboard function map(f, a) { const result = new Array(a.length); for (let i = 0; i < a.length; ...
[small, medium, large];// build new objects that are combinations of the above// and put them into a new arrayvarcoffees = coffeeTypes.reduce(function(previous, current) {varnewCoffee = coffeeSizes.map(function(mixin) {// `plusmix` function for functional mixins, see Ch.7varnewCoffee...
function factorial(n){ if (n <= 0) return 1; else return n * arguments.callee(n - 1)}document.write(factorial(4)); caller functionName.caller 获取调用当前函数的函数。 function CallLevel(){ if (CallLevel.caller == null) return("CallLevel was called from the top level."); else retu...
{};const cachedFactorial = n => { if (n in cache) { return cache[n]; } if (n < 2) { cache[n] = 1; return 1; } cache[n] = n * cachedFactorial(n - 1); return cache[n];};console.log(cachedFactorial(5)); // 输出: 120console.log(cachedFactorial(5))...