w3resource

JavaScript: Check whether there is at least one element which occurs in two given sorted arrays of integers

JavaScript Basic: Exercise-100 with Solution

Write a JavaScript program to check whether there is at least one element which occurs in two given sorted arrays of integers.

Pictorial Presentation:

JavaScript: Check whether there is at least one element which occurs in two given sorted arrays of integers.

Sample Solution:

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title> Check whether there is at least one element which occurs in two given sorted arrays of integers</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function check_common_element(arra1, arra2) {
  for (var i = 0; i < arra1.length; i++)
  {
    if (arra2.indexOf(arra1[i]) != -1) 
      return true;
  }
  return false;
}
console.log(check_common_element([1,2,3], [3,4,5]));   
console.log(check_common_element([1,2,3], [5,6,7]));

Sample Output:

true
false

Flowchart:

Flowchart: JavaScript - Check whether there is at least one element which occurs in two given sorted arrays of integers

ES6 Version:

function check_common_element(arra1, arra2) {
  for (let i = 0; i < arra1.length; i++)
  {
    if (arra2.includes(arra1[i])) 
      return true;
  }
  return false;
}
console.log(check_common_element([1,2,3], [3,4,5]));   
console.log(check_common_element([1,2,3], [5,6,7]));

Live Demo:

See the Pen javascript-basic-exercise-100 by w3resource (@w3resource) on CodePen.


Contribute your code and comments through Disqus.

Previous: Write a JavaScript program to check whether it is possible to rearrange characters of a given string in such way that it will become equal to another given string.
Next: Write a JavaScript program to check whether a given string contains only Latin letters and no two uppercase and no two lowercase letters are in adjacent positions.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



JavaScript: Tips of the Day

Converts a string to title case

Example:

const toTitleCase = str =>
  str
    .match(/[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g)
    .map(x => x.charAt(0).toUpperCase() + x.slice(1))
    .join(' ');
console.log(toTitleCase('some_database_field_name')); // 'Some Database Field Name'
console.log(toTitleCase('Some label that needs to be title-cased')); // 'Some Label That Needs To Be Title Cased'
console.log(toTitleCase('some-package-name')); // 'Some Package Name'
console.log(toTitleCase('some-mixed_string with spaces_underscores-and-hyphens')); // 'Some Mixed String With Spaces Underscores And Hyphens'

Output:

"Some Database Field Name"
"Some Label That Needs To Be Title Cased"
"Some Package Name"
"Some Mixed String With Spaces Underscores And Hyphens"