Ways to calculate the total of two arrays

Question

Ways to calculate the total of two arrays

One of my recent challenges involved creating a calculator using JavaScript.

The main issue I encountered was figuring out how to find the sum of 2 arrays. The first number, 33, is saved to an array called num1, and the second number, 99, is saved to an array called num2. For example, if we add 33 and 99 (33+99 = ?), the result should be 132.

After experimenting, I came up with the following code snippet. However, the total returns in a concatenated format (1,3,5,3) instead of the desired numerical sum.

     const calculate = (n1,n2) => {
     let result = ""

     if (n1.length > 0 ){
        result =  n1 + n2
     }
        return result
     }

     v.push(calculate(num1, num2)) 
     document.getElementById("answer").innerHTML = v

javascript

Answer 1

Answer №1

Utilize the .reduce() method

let numbers1 = [1,2,3,4,5];
let numbers2 = [1,2,3,4,5];

let sum = numbers1.reduce((accumulator, currentValue) => accumulator + currentValue, 0) + numbers2.reduce((accumulator, currentValue) => accumulator + currentValue, 0);

console.log(sum);

Answer 2

Utilize the .reduce() method

let numbers1 = [1,2,3,4,5];
let numbers2 = [1,2,3,4,5];

let sum = numbers1.reduce((accumulator, currentValue) => accumulator + currentValue, 0) + numbers2.reduce((accumulator, currentValue) => accumulator + currentValue, 0);

console.log(sum);

Answer 3

Answer №2

Here is an example showcasing the use of only one reduce method:

let array1 = [1,2,3,4,5];
let array2 = [1,2,3,4,5];
array1.concat(array2).reduce((a,v) => a + v,0)

Alternatively, you could also write it like this:

let array1 = [1,2,3,4,5];
let array2 = [1,2,3,4,5];
[...array1, ...array2].reduce((a,v) => a + v,0)

Answer 4

Here is an example showcasing the use of only one reduce method:

let array1 = [1,2,3,4,5];
let array2 = [1,2,3,4,5];
array1.concat(array2).reduce((a,v) => a + v,0)

Alternatively, you could also write it like this:

let array1 = [1,2,3,4,5];
let array2 = [1,2,3,4,5];
[...array1, ...array2].reduce((a,v) => a + v,0)

Ways to calculate the total of two arrays

Answer №1

Answer №2

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