Please note, this is a STATIC archive of website www.w3resource.com from 19 Jul 2022, cach3.com does not collect or store any user information, there is no "phishing" involved.
w3resource

JavaScript: Find the number of sorted pairs formed by its elements of a given array of integers such that one element in the pair is divisible by the other one

JavaScript Basic: Exercise-107 with Solution

Write a JavaScript program to find the number of sorted pairs formed by its elements of a given array of integers such that one element in the pair is divisible by the other one.

For example - The output of [1, 3, 2] ->2 - (1,3), (1,2).
The output of [2, 4, 6] -> 2 - (2,4), (2,6)
The output of [2, 4, 16] -> 3 - (2,4), (2,16), (4,16)

Sample Solution:

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title> Find the number of sorted pairs formed by its elements of a given array of integers such that one element in the pair is divisible by the other one</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function arr_pairs(arr) {
    var result = 0;
    for (var i = 0; i < arr.length; i++)
        {
        for (var j = i + 1; j < arr.length; j++)
            {
              if (arr[i] % arr[j] === 0 || arr[j] % arr[i] === 0)
                {
                result++;
                }
         }
      }
    return result;
}
console.log(arr_pairs([1,2,3]))
console.log(arr_pairs([2,4,6]))
console.log(arr_pairs([2,4,16]))

Sample Output:

2
2
3

Flowchart:

Flowchart: JavaScript - Find the number of sorted pairs formed by its elements of a given array of integers such that one element in the pair is divisible by the other one

ES6 Version:

function arr_pairs(arr) {
    let result = 0;
    for (let i = 0; i < arr.length; i++)
        {
        for (let j = i + 1; j < arr.length; j++)
            {
              if (arr[i] % arr[j] === 0 || arr[j] % arr[i] === 0)
                {
                result++;
                }
         }
      }
    return result;
}
console.log(arr_pairs([1,2,3]))
console.log(arr_pairs([2,4,6]))
console.log(arr_pairs([2,4,16]))

Live Demo:

See the Pen javascript-basic-exercise-107 by w3resource (@w3resource) on CodePen.


Contribute your code and comments through Disqus.

Previous: Write a JavaScript program to divide a integer by another integer as long as the result is an integer and return the result.
Next: Write a JavaScript program to create the dot products of two given 3D vectors.

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