Q.

Description:
Given: an array containing hashes of names

Return: a string formatted as a list of names separated by commas except for the last two names, which should be separated by an ampersand.

Example:

list([ {name: 'Bart'}, {name: 'Lisa'}, {name: 'Maggie'} ])
// returns 'Bart, Lisa & Maggie'

list([ {name: 'Bart'}, {name: 'Lisa'} ])
// returns 'Bart & Lisa'

list([ {name: 'Bart'} ])
// returns 'Bart'

list([])
// returns ''
Note: all the hashes are pre-validated and will only contain A-Z, a-z, '-' and '.'.

A)

function list(names){
  //your code here
  let res = '';
  for (let i = 0; i < names.length; i++) {
    if (i === names.length -2) {
      res += names[i].name + ' & ' + names[i+1].name
      break;
    }
    res += names[i].name + ', '
  }
  return names.length === 1 ? names[0].name : res
}