자연수 내림차순 정렬하기

sey2 · Aug 15, 2022 · d297677 · d297677
1 parent da1da6c
commit d297677
Showing 1 changed file with 15 additions and 0 deletions.
diff --git a/programmers/IntRevers.java b/programmers/IntRevers.java
@@ -0,0 +1,15 @@
+import java.util.*;
+
+class Solution {
+    public long solution(long n) {
+        String str = Long.toString(n);
+        PriorityQueue<String> pq = new PriorityQueue<>(Collections.reverseOrder());
+
+        for(int i=0; i<str.length(); i++) pq.add(Integer.toString(str.charAt(i)-48));
+
+        String ans ="";
+        while(!pq.isEmpty()) ans+= pq.poll(); 
+
+        return Long.parseLong(ans);
+    }
+}