We are required to write a JavaScript function that takes in a number and returns the difference of the sums of the digits at even place and the digits odd place.
Example
The code for this will be −
const num = 123456; const alternateDifference = (num, res = 0, ind = 0) => { if(num){ if(ind % 2 === 0){ res += num % 10; }else{ res -= num % 10; }; return alternateDifference(Math.floor(num / 10), res, ++ind); }; return Math.abs(res); }; console.log(alternateDifference(num));
Output
The output in the console −
3