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JavaScript: Get the integers in a range

JavaScript Function: Exercise-3 with Solution

Write a JavaScript program to get the integers in range (x, y).

Example : range(2, 9)
Expected Output : [3, 4, 5, 6, 7, 8]

Pictorial Presentation:

JavaScript: Get the integers in a range

Sample Solution:-

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>Gets the integers from x to y</title>
</head>
<body>

</body>
</html>

JavaScript Code:

var range = function(start_num, end_num) 
{
  if (end_num - start_num === 2) 
  {
    return [start_num + 1];
  } 
  else 
  {
    var list = range(start_num, end_num - 1);
    list.push(end_num - 1);
    return list;
  }
};

console.log(range(2,9));

Output:

[3,4,5,6,7,8]

Flowchart:

Flowchart: JavaScript recursion function- Get the integers in a range

Live Demo:

See the Pen javascript-recursion-function-exercise-3 by w3resource (@w3resource) on CodePen.


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Previous: Write a JavaScript program to find the greatest common divisor (gcd) of two positive numbers.
Next: Write a JavaScript program to compute the sum of an array of integers.

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JavaScript: Tips of the Day

Add padding to the beginning of a string

const name = 'Minta Lofton';
console.log(name.padStart(13));
console.log(name.padStart(2));

With the padStart method, we can add padding to the beginning of a string. The value passed to this method is the total length of the string together with the padding. The string "Minta Lofton" has a length of 12. name.padStart(13) inserts 1 space at the start of the string, because 12 + 1 is 13.
If the argument passed to the padStart method is smaller than the length of the array, no padding will be added.

Ref: https://bit.ly/3jFRBje