From 16e6e8d1806ee7f079624f86967ea21c12a23766 Mon Sep 17 00:00:00 2001
From: hnu202326010302 <1677625723@qq.com>
Date: Sat, 27 Sep 2025 16:42:07 +0800
Subject: [PATCH] ADD file via upload

---
 src/Makeproblem.java | 9 +++++++++
 1 file changed, 9 insertions(+)
 create mode 100644 src/Makeproblem.java

diff --git a/src/Makeproblem.java b/src/Makeproblem.java
new file mode 100644
index 0000000..9c2c1e2
--- /dev/null
+++ b/src/Makeproblem.java
@@ -0,0 +1,9 @@
+public interface Makeproblem {
+  String generateSmartExpression();
+
+  String buildExpression(int a, int b);
+
+  String generateSimpleExpression(int a);
+
+  char getRandomOperator(String str);
+}
\ No newline at end of file