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JavaScript: Add two digits of a given positive integer of length two

JavaScript Basic: Exercise-81 with Solution

Write a JavaScript program to add two digits of a given positive integer of length two.

Pictorial Presentation:

JavaScript: Add two digits of a given positive integer of length two.

Sample Solution:

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JavaScript program to add two digits of a given positive integer of length two.</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function add_two_digits(n)
   {
      return n % 10 + Math.floor(n / 10);
   }
console.log(add_two_digits(25))
console.log(add_two_digits(50))

Sample Output:

7
5

Flowchart:

Flowchart: JavaScript - Add two digits of a given positive integer of length two

ES6 Version:

function add_two_digits(n)
   {
      return n % 10 + Math.floor(n / 10);
   }
console.log(add_two_digits(25))
console.log(add_two_digits(50))

Live Demo:

See the Pen javascript-basic-exercise-81 by w3resource (@w3resource) on CodePen.


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Previous: Write a JavaScript program to swap the first and last elements of a given array of integers. The array length should be at least 1.
Next: Write a JavaScript to add two positive integers without carry.

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JavaScript: Tips of the Day

Returns the sum of the powers of all the numbers from start to end (both inclusive)

Example:

const sumPower = (end, power = 2, start = 1) =>
  Array(end + 1 - start)
    .fill(0)
    .map((x, i) => (i + start) ** power)
    .reduce((a, b) => a + b, 0);
console.log(sumPower(10)); // 385
console.log(sumPower(10, 3)); // 3025
console.log(sumPower(10, 3, 5)); // 2925 

Output:

385
3025
2925