프로그래머스 | 문자열 압축

function solution(s) {
    var answer = s.length;
    for(let i=1;i<=parseInt(s.length/2);i++){
        
        let part=s.slice(0,i);
        let count=1;
        let str='';
        
        for(let j=i;j<s.length;j+=i){
            
            if(part===s.slice(j,j+i)){
                count+=1;
            }else{
                str+=count>1?count+part:part;
                count=1;
                part=s.slice(j,j+i);
            }
            
        }
        str+=count>1?count+part:part;
        answer=Math.min(answer,str.length)
    }
    return answer;
}