38. Count and Say

public class Solution {
    public String countAndSay(int n) {
        int i=1;
        String seq="1";
        while(i<n){
            StringBuilder sb=new StringBuilder();
            int count=0;
            char c=seq.charAt(0);
            for(int j=0;j<=seq.length();j++){
                if(j!=seq.length()&&seq.charAt(j)==c){
                    count++;
                    continue;
                }else{
                    sb.append(count);
                    sb.append(c);
                    if(j!=seq.length()){
                        c=seq.charAt(j);
                        count=1;
                    }
                }
            }
            seq=sb.toString();
            i++;
        }
        return seq;
    }
}