diff --git a/HSKIM/51to60/54.py b/HSKIM/51to60/54.py
new file mode 100644
index 0000000..d62bb57
--- /dev/null
+++ b/HSKIM/51to60/54.py
@@ -0,0 +1,15 @@
+def solution(s):
+    answer = ''
+    arr = [0 for _ in range(26)]
+
+    for c in s:
+        arr[ord(c) - ord('a')] += 1
+    
+    for i in range(26):
+        while arr[i] > 0:
+            answer += chr(i + ord('a'))
+            arr[i] -= 1
+    
+    return answer
+
+print(solution("algorithm"))
\ No newline at end of file