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Recursion - Sum Nested Array in JavaScript
We are required to write a JavaScript function that takes in a nested array of Numbers and returns the sum of all the numbers present in the array.
Let’s say the following is our nested array −
const arr = [2, 5, 7, [ 4, 5, 4, 7, [ 5, 7, 5 ], 5 ], 2];
Example
Following is the code −
const arr = [2, 5, 7, [
4, 5, 4, 7, [
5, 7, 5
], 5
], 2];
const calculateSum = (arr, query) => {
let count = 0;
for(let i = 0; i < arr.length; i++){
if(Array.isArray(arr[i])){
count += calculateSum(arr[i], query);
continue;
};
count += arr[i];
};
return count;
};
console.log(calculateSum(arr));Output
This will produce the following output in console −
58
Updated on 30-Sep-2020 14:17:37
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