Short Long Short.js

// Given 2 strings, a and b, return a string of the form short+long+short, with the shorter string on the outside and the longer string on the inside. The strings will not be the same length, but they may be empty ( length 0 ).

// For example:

// solution("1", "22") // returns "1221"
// solution("22", "1") // returns "1221"

///////////// Solution //////////////

function solution(a, b){
    // your code here
    return a.length > b.length ? b + a + b : a + b + a
  }