From 32ea24ead51deae4a12247253a0d1b61503e36af Mon Sep 17 00:00:00 2001
From: Geonhee Min <baekyangdan@gmail.com>
Date: Tue, 4 Nov 2025 01:55:29 +0000
Subject: [PATCH] =?UTF-8?q?issue=20#=20=EB=9E=9C=EB=8D=A4=20=EC=BD=94?=
 =?UTF-8?q?=EB=93=9C=20=EC=83=9D=EC=84=B1=EA=B8=B0=20=EA=B5=AC=ED=98=84?=
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---
 .../utils/generator/RandomCodeGenerator.java  | 35 +++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 src/main/java/com/baekyangdan/scheduler/utils/generator/RandomCodeGenerator.java

diff --git a/src/main/java/com/baekyangdan/scheduler/utils/generator/RandomCodeGenerator.java b/src/main/java/com/baekyangdan/scheduler/utils/generator/RandomCodeGenerator.java
new file mode 100644
index 0000000..54541d6
--- /dev/null
+++ b/src/main/java/com/baekyangdan/scheduler/utils/generator/RandomCodeGenerator.java
@@ -0,0 +1,35 @@
+package com.baekyangdan.scheduler.utils.generator;
+
+import java.security.SecureRandom;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+public class RandomCodeGenerator {
+    private static final String DIGITS = "0123456789";
+    private static final SecureRandom random = new SecureRandom();
+
+    public static String generateRandomCode(int length) {
+        List<Character> codeCharacters = ArrayList<>(length);
+
+        for (int i = 0; i < length; i++) {
+            codeCharacters.add(randomChar());
+        }
+
+        Collections.shuffle(codeCharacters, random);
+
+        StringBuilder sb = new StringBuilder(length);
+
+        for (char c : codeCharacters) {
+            sb.append(c);
+        }
+
+        return sb.toString();
+    }
+
+    private static char randomChar() {
+        int idx = random.nextInt(DIGITS.length());
+        return DIGITS.charAt(idx);
+    }
+}
\ No newline at end of file