grouped-by-commas.js

// Finish the solution so that it takes an input n (integer) and returns a string that is the decimal representation of the number grouped by commas after every 3 digits.

// Assume: 0 <= n < 2147483647

// Examples
//        1  ->           "1"
//       10  ->          "10"
//      100  ->         "100"
//     1000  ->       "1,000"
//    10000  ->      "10,000"
//   100000  ->     "100,000"
//  1000000  ->   "1,000,000"
// 35235235  ->  "35,235,235"

function groupByCommas(n) {
    return n.toLocaleString('en-US')
}