Count And Say

public class Solution {
    public String countAndSay(int n) {
        if(n==1) return "1";
        
        String rec= countAndSay(n-1);
        String ans="";
        int count=1;
        for(int i=1; i<=rec.length(); i++){
            if(i<rec.length() && rec.charAt(i)==rec.charAt(i-1)) count++;
            else {
                ans=ans+ count+ rec.charAt(i-1);
                count=1;
            }
        }
        return ans;
    }
}