3
06/11/2024 11:01 am
Topic starter
Write a JavaScript function that calculates and prints the sum of the first and the last elements in an array.
The input comes as array of string elements holding numbers.
Examples:
Input:
['20', '30', '40']
Output:
60
Input:
['5', '10']
Output:
15
The output is the return value of your function.
1 Answer
2
06/11/2024 11:02 am
My solution 1:
function sumFirstLast(arr) {
let n1 = Number(arr[0]);
let n2 = Number(arr[arr.length - 1]);
console.log(n1 + n2);
}
sumFirstLast(['20', '30', '40']);
My solution 2:
function sum(array) {
return Number(array[0]) + Number(array[array.length - 1]);
}
console.log(sum(['15', '55']));
