how to get the recursive sum of a number in javascript code example
Example 1: javascript recursive sum function
// Write a recursive method that returns the sum of all elements in an array
function recSum(nums) {
if (nums.length === 1 ) {
return nums[0];
}
if (nums.length === 0 ) {
return 0;
}
let sum = nums[0] + recSum(nums.slice(1,nums.length));
return sum;
}
Example 2: sum numbers recursively js
function sum(n) {
if (n < 1) return 0; // exit condition
return n + sum(n - 1); // return value plus result of recursive call
}
console.log(sum(3));