import java.util.ArrayList;

public class javameidi01 {
    public static void main(String[] args) {
        String[] words={"This", "is", "an", "instance", "of", "code", "alignment."};
        int m=16;
        ArrayList<String> res=justifyFill(words,m);
        for (String re : res) {
            System.out.println(re);
        }
    }

    public static ArrayList<String> justifyFill (String[] words, int M) {
        // write code here
        int l=0;
        ArrayList<String> list=new ArrayList<>();
        while(l<words.length){
            int r=l;
            int len=0;
            StringBuilder res=new StringBuilder();
            while(((r<words.length)&&(len+words[r].length()+r-l)<=M)){
                len+=words[r].length();
                r++;
            }
            int space=M-len;
            for(int i=l;i<r;i++){
                //先加入这个单词
                res.append(words[i]);
                if(space>0){
                    int temp;
                    /*
                    分别讨论是最后一行还是其他行
                    然后在每行直接判断就是最后一行如果是最后一个元素就是直接剩余空格，不是的话就是直接1个空格
                    其他行的话如果是最后一个单词就是直接把所有的空格给她，添加空格就是直接对r-i-1取余
                     */
                    if(r==words.length){
                        if(r-i==1) temp=space;
                        else temp=1;
                    }else{
                        if(r-i-1>0){
                            if(space%(r-i-1)==0) temp=space/(r-i-1);
                            else temp=space/(r-i-1)+1;
                        }else temp=space;
                    }
                    for (int j=0;j<temp;j++){
                        res.append(" ");
                    }
                    space-=temp;
                }
            }
            l=r;
            list.add(res.toString());
        }
        return list;
    }
}