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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.


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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.

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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"