CustomString

CustomString.java

class CustomString implements Comparable<CustomString> {
	
	public String str;
	
	public CustomString(String str) {
		this.str = str;
	}

	public int compareTo(CustomString cs) {
		int leng1 = this.str.length();
		int leng2 = cs.str.length();
		if (leng1 < leng2) return -1;
		if (leng1 > leng2) return 1;
		return this.str.compareTo(cs.str); // 길이가 같은 경우만 compareTo 사용함
	}
}
public static void main(String[] args) throws NumberFormatException, IOException {
  
    PriorityQueue<CustomString> pq = new PriorityQueue<CustomString>(); 
    pq.add(new CustomString("axcdcc"));
    pq.add(new CustomString("33"));
    pq.add(new CustomString("zsdc"));
}