60 lines
2.3 KiB
Java
60 lines
2.3 KiB
Java
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// [문제 링크]: https://school.programmers.co.kr/learn/courses/30/lessons/42746#
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import java.util.*;
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import java.lang.StringBuilder;
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class Solution {
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public String solution(int[] numbers) {
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String answer = "";
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Comp comp = new Comp();
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StringBuilder sb = new StringBuilder();
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String[] nb = new String[numbers.length];
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for(int a = 0; a < numbers.length; a++){
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nb[a] = String.valueOf(numbers[a]);
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}
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Arrays.sort(nb,comp);
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for(String s : nb) sb.append(s);
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return (sb.charAt(0)=='0')?"0":sb.toString();
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}
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public class Comp implements Comparator<String> {
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public int compare(String a, String b) {
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int temp = 0, end = Math.min(a.length(),b.length())-1;
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int l = Integer.parseInt(a+b), r = Integer.parseInt(b+a);
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while(true){
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if(a.charAt(temp) < b.charAt(temp)) return 1;
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else if(a.charAt(temp) > b.charAt(temp)) return -1;
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if(temp < end) temp++;
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else break;
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} // 이거 통과헸다는 것은 동일 길이까지 전부 같다는 것.
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if(a.length()==b.length()) return 0; // 이건 0 0 0 0 대비
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if(a.length()>b.length()){
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int tt = end+1, te = b.length(), mm = a.length();
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// System.out.println(a+" "+b);
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while(true){
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if(a.charAt(tt)>b.charAt(tt%te)) return -1;
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else if (a.charAt(tt)==b.charAt(tt%te)) {
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if(tt >= mm-1){
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if(l>r) return -1;
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else return 1;
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}
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else tt++;
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}
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else return 1;
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}
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} else {
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int tt = end+1, te = a.length(), mm = b.length();
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while(true){
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if(b.charAt(tt)>a.charAt(tt%te)) return 1;
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else if (b.charAt(tt)==a.charAt(tt%te)) {
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if(tt >= mm-1) {
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if(l<r) return 1;
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else return -1;
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}
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else tt++;
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}
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else return -1;
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}
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}
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}
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}
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}
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