https://programmers.co.kr/learn/courses/30/lessons/42746
정렬 알고리즘 문제
import java.util.*;
class Solution {
public String solution(int[] numbers) {
String answer = "";
String[] arr = new String[numbers.length];
for(int i=0;i<numbers.length;i++){
arr[i] = Integer.toString(numbers[i]);
}
Arrays.sort(arr, new Comparator<String>(){
@Override
public int compare(String str1, String str2){
return (str2+str1).compareTo(str1+str2);
}
});
if(arr[0].startsWith("0")){
answer += "0";
}else{
for(String a : arr){
answer += a;
}
}
return answer;
}
}
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