diff --git a/programmers/[3차] 파일명 정렬/solution.java b/programmers/[3차] 파일명 정렬/solution.java
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+++ b/programmers/[3차] 파일명 정렬/solution.java	
@@ -0,0 +1,38 @@
+// [문제 링크]: https://school.programmers.co.kr/learn/courses/30/lessons/17686
+
+import java.util.*;
+class Solution {
+    public String[] solution(String[] files) {
+        String[] answer = {};
+        Arrays.sort(files,new Comparator<String>() {
+       @Override
+       public int compare(String o1, String o2) {
+              return 
+                  ((division(o1)[0].toLowerCase().compareTo(division(o2)[0].toLowerCase())==0)?
+                  (Integer.parseInt(division(o1)[1])-Integer.parseInt(division(o2)[1])):
+                    division(o1)[0].toLowerCase().compareTo(division(o2)[0].toLowerCase()));
+                }
+        });
+        return files;
+    }
+    private String[] division(String target){
+        int b = 0, bf = 0;
+        String[] tp = new String[2];
+        for(int a = 0; a < target.length(); a++){
+            if(b == 0 && Character.isDigit(target.charAt(a))) {
+                tp[b] = target.substring(0,a);
+                bf = a;
+                b = 1;
+            } else if(b == 1){
+                if(!Character.isDigit(target.charAt(a))) {
+                    tp[b] = target.substring(bf,a);
+                    bf = a;
+                    b = 2;
+                }
+                else if(a == target.length()-1 || a == bf+4) tp[b] = target.substring(bf,a+1);
+            }
+        }
+        if(tp[1] == null) tp[b] = target.substring(bf);
+        return tp;
+    }
+}
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