04. Party Time (Assoc Arrays)

function solve(input){
  const isVip = (guestName)=>{
        return guestName[0].charCodeAt() >= 48 && guestName[0].charCodeAt(0) <= 57;
  }

    let guests = new Map();
    let partyIndex = input.indexOf('PARTY');
    let guestList = input.slice(0,partyIndex);
    let visitors = input.slice(partyIndex+1);

    for (const visitor of visitors) {
        guests.set(visitor, 'VISITED');
    }



    for (const guest of guestList) {

        let value = isVip(guest)? 'VIP':'REGULAR';
        if(!guests.has(guest)){
            guests.set(guest, value);
        }else{
            guests.delete(guest);
        }
    }

        console.log(Array.from(guests).length);
            Array.from(guests).forEach(pair=>{
                if(pair[1] === 'VIP'){
                    console.log(pair[0]);
                }
            });
            Array.from(guests).forEach(pair=>{
                if(pair[1] === 'REGULAR'){
                    console.log(pair[0]);
                }
            });


}