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 the same in a given array of integers of length 3.
The program checks if the first and last elements in an array of integers of length 3 are the same. If they are identical, it returns true; otherwise, it returns false.
Visual Presentation:
Sample Solution:
JavaScript Code:
// Define a function named first_last_same with a parameter nums
function first_last_same(nums) {
// Calculate the index of the last element in the array
var end = nums.length - 1;
// Check if the array has at least one element
if (nums.length >= 1) {
// Return true if the first and last elements of the array are equal, otherwise return false
return nums[0] == nums[end];
} else {
// Return false if the array is empty
return false;
}
}
// Call the function with sample arguments and log the results to the console
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]));
Output:
false true true
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.
Flowchart:
ES6 Version:
// Define a function named first_last_same with a parameter nums using arrow function syntax
const first_last_same = nums => {
// Store the last index of the array
const end = nums.length - 1;
// Check if the array has at least one element
if (nums.length >= 1) {
// Use the equality operator (==) to compare the first and last elements
return nums[0] === nums[end];
} else {
// Return false if the array is empty
return false;
}
};
// Call the function with sample arguments and log the results to the console
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]));
Improve this sample solution and post your code through Disqus.
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