JavaScript: Compute the sum and product of an array of integers

JavaScript Array: Exercise-12 with Solution

Sum and Product of Array

Write a JavaScript program to compute the sum and product of an array of integers.

Visual Presentation:

Sample Solution:

JavaScript Code:

// Declare and initialize an array of numbers
var array = [1, 2, 3, 4, 5, 6];

// Initialize variables for sum (s) and product (p)
var s = 0;
var p = 1;

// Iterate through the array using a for loop
for (var i = 0; i < array.length; i += 1) {
  // Add the current element to the sum
  s += array[i];

  // Multiply the current element to the product
  p *= array[i];
}

// Output the calculated sum and product
console.log('Sum : ' + s + ' Product :  ' + p); 

Output:

Sum : 21 Product :  720

Flowchart:

ES6 Version:

// Declare and initialize an array of numbers
const array = [1, 2, 3, 4, 5, 6];

// Initialize variables for sum (s) and product (p)
let s = 0;
let p = 1;

// Iterate through the array using a for...of loop
for (const element of array) {
  // Add the current element to the sum
  s += element;

  // Multiply the current element to the product
  p *= element;
}

// Output the calculated sum and product
console.log(`Sum : ${s} Product : ${p}`);

Live Demo:

See the Pen avaScript - sum and product of an array of integers- array-ex- 12 by w3resource (@w3resource) on CodePen.

For more Practice: Solve these Related Problems:

• Write a JavaScript function that computes both the sum and product of all numbers in an array and returns them as an object.
• Write a JavaScript function that uses a for loop to calculate the sum and product simultaneously.
• Write a JavaScript function that employs the reduce() method twice to obtain the sum and product separately.
• Write a JavaScript function that validates that all elements are numbers before computing their sum and product.

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