diff --git a/programmers/완주하지 못한 선수/solution.java b/programmers/완주하지 못한 선수/solution.java
new file mode 100644
index 0000000..3126b86
--- /dev/null
+++ b/programmers/완주하지 못한 선수/solution.java	
@@ -0,0 +1,25 @@
+// [문제 링크]: https://school.programmers.co.kr/learn/courses/30/lessons/42576
+
+import java.util.*;
+
+class Solution {
+    public String solution(String[] participant, String[] completion) {
+        String answer = "";
+
+        Arrays.sort(participant);
+        Arrays.sort(completion);
+
+        for(int i=0; i<participant.length; i++) {
+            if(!participant[i].equals(completion[i])) {
+                answer = participant[i];
+                break;
+            }
+            if(i == completion.length) {
+                answer = participant[i];
+                break;
+            } 
+        }
+
+        return answer;
+    }
+}
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