Recursive multiplication in array - JavaScript

We are required to write a JavaScript function that takes in an array of nested arrays of Numbers and some false values (including 0) and some strings as wel. the function should return the product of number values present in the nested array.

If the array contains some 0s, we should ignore them as well. Let’s write the code for this function −

Example

const arr = [1, 5, 2, null, [
      2, 5, null, undefined, false, 5, [
         1, 3, false, 0, 2
      ], 4, 2, false
   ], 4, 6, 0
];
const recursiveMultiplication = arr => {
   let prod = 1;
   for(let i = 0; i < arr.length; i++){
      if(Array.isArray(arr[i])){
         prod *= recursiveMultiplication(arr[i]);
      }else{
         prod *= arr[i] || 1;
      };
   };
   return prod;
};
console.log(recursiveMultiplication(arr));

Output

Following is the output in the console −

576000

AmitDiwan

Published on 14-Sep-2020 14:12:40

• Related Questions & Answers
• Checking an array for palindromes - JavaScript  
• Alternate addition multiplication in an array - JavaScript
• Addition multiplication ladder in an array in JavaScript\n
• How to select the middle of an array?  - JavaScript
• The globals(), locals() and reload() Functions in Python
• JavaScript Quicksort recursive
• The time Module in Python
• The calendar Module in Python
• The Anonymous Functions in Python
• The return Statement in Python
• The import Statements in Python
• The Threading Module in Python
• The match Function in Python
• The search Function in Python
• Using merge sort to recursive sort an array JavaScript