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JavaScript: Check whether the first and last elements are equal of a given array of integers length 3

JavaScript Basic: Exercise-72 with Solution

Write a JavaScript program to check whether the first and last elements are equal of a given array of integers length 3.

Pictorial Presentation:

JavaScript: Check whether the first and last elements are equal of a given array of integers length 3.

Sample Solution:

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JavaScript program to check whether the first and last elements are equal of a given array of integers length 3</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function first_last_same(nums)
   {
    var end = nums.length - 1;
    if (nums.length >= 1){
       return nums[0] == nums[end];
    } else {return false;}
}

console.log(first_last_same([10, 20, 30])); 
console.log(first_last_same([10, 20, 30, 10])); 
console.log(first_last_same([20, 20, 20])); 

Sample Output:

false
true
true

Flowchart:

Flowchart: JavaScript - Check whether the first and last elements are equal of a given array of integers length 3

ES6 Version:

function first_last_same(nums)
   {
    const end = nums.length - 1;
    if (nums.length >= 1){
       return nums[0] == nums[end];
    } else {return false;}
}

console.log(first_last_same([10, 20, 30])); 
console.log(first_last_same([10, 20, 30, 10])); 
console.log(first_last_same([20, 20, 20]));

Live Demo:

See the Pen JavaScript - check whether the first and last elements are equal of a given array of integers length 3 - basic-ex-72 by w3resource (@w3resource) on CodePen.


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JavaScript: Tips of the Day

Checks if a string is an anagram of another string (case-insensitive, ignores spaces, punctuation and special characters)

Example:

const isAnagram = (str1, str2) => {
  const normalize = str =>
    str
      .toLowerCase()
      .replace(/[^a-z0-9]/gi, '')
      .split('')
      .sort()
      .join('');
  return normalize(str1) === normalize(str2);
};
console.log(isAnagram('iceman', 'cinema')); // true

Output:

true