プログラマー|カーペット

function solution(brown, yellow) {
    var answer = [];
    let total=brown+yellow;
    for(let i=Math.floor(total/2);i>0;i--){
        if(total%i!==0)continue;
        let w=i;
        let h=total/i;
        if((w+h)*2-4===brown){
            answer=[w,h];
            break;
        }
    }
    return answer;
}