JavaScript: Check whether a given integer has an increasing digits sequence

Last update on May 30 2022 10:02:46 (UTC/GMT +8 hours)

JavaScript Basic: Exercise-119 with Solution

Write a JavaScript program to check whether a given integer has an increasing digits sequence.

Pictorial Presentation:

JavaScript: Check whether a given integer has an increasing digits sequence.

Sample Solution:

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title> Check whether a given integer has an increasing digits sequence</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function is_increasing_digits_Sequence(num) {

  var arr_num = ('' + num).split('');

  for (var i = 0; i < arr_num.length - 1; i++) {
    if (parseInt(arr_num[i]) >= parseInt(arr_num[i + 1]))
      return false;
    }
  return true;
}

console.log(is_increasing_digits_Sequence(123));
console.log(is_increasing_digits_Sequence(1223));
console.log(is_increasing_digits_Sequence(45677));

Sample Output:

true
false
false

Flowchart:

Live Demo:

See the Pen javascript-basic-exercise-119 by w3resource (@w3resource) on CodePen.

Improve this sample solution and post your code through Disqus

Previous: Write a JavaScript program to check whether a given number is in a given range.
Next: Write a JavaScript program to check whether a point lies strictly inside a given circle.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.

JavaScript: Tips of the Day

How to insert an item into an array at a specific index (JavaScript)?

What you want is the splice function on the native array object.

arr.splice(index, 0, item); will insert item into arr at the specified index (deleting 0 items first, that is, it's just an insert). In this example we will create an array and add an element to it into index 2:

var arr = [];
arr[0] = "Jani";
arr[1] = "Hege";
arr[2] = "Stale";
arr[3] = "Kai Jim";
arr[4] = "Borge";

console.log(arr.join());
arr.splice(2, 0, "Lene");
console.log(arr.join());

Ref: https://bit.ly/2BXbp04