JavaScript: Find the longest string from a given array of strings
JavaScript Basic: Exercise-83 with Solution
Write a JavaScript program to find the longest string from a given array of strings.
Visual Presentation:
Sample Solution:
JavaScript Code:
// Function to find the longest string(s) in an array
function longest_string(str_ara) {
var max = str_ara[0].length; // Initialize max length with the length of the first string
str_ara.map(v => max = Math.max(max, v.length)); // Update max with the maximum length in the array using the map function
result = str_ara.filter(v => v.length == max); // Filter out strings that have the maximum length
return result; // Return the array of longest strings
}
// Example usage
console.log(longest_string(['a', 'aa', 'aaa', 'aaaaa', 'aaaa']));
Output:
["aaaaa"]
Live Demo:
See the Pen javascript-basic-exercise-83 by w3resource (@w3resource) on CodePen.
Flowchart:
ES6 Version:
// ES6 version with comments
// Function to find the longest strings in an array
const longest_string = (str_ara) => {
let max = str_ara[0].length; // Initialize max length with the length of the first string
str_ara.map(v => max = Math.max(max, v.length)); // Update max by finding the maximum length in the array
result = str_ara.filter(v => v.length == max); // Filter strings that have the maximum length
return result; // Return the result array
};
// Example usage
console.log(longest_string(['a', 'aa', 'aaa', 'aaaaa', 'aaaa']));
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