From 9ea5517b066f1418f48ae73fc7d36cfff1875146 Mon Sep 17 00:00:00 2001
From: xyli <dev12102@linx-info.com>
Date: Fri, 3 Mar 2023 13:55:47 +0800
Subject: [PATCH] =?UTF-8?q?=E6=96=B0=E5=A2=9E=E5=AD=97=E7=AC=A6=E4=B8=B2?=
 =?UTF-8?q?=E6=8B=BC=E6=8E=A5=E6=96=B9=E6=B3=95?=
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---
 src/test/java/TestCpu.java | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/test/java/TestCpu.java b/src/test/java/TestCpu.java
index f06b144..1f168ba 100644
--- a/src/test/java/TestCpu.java
+++ b/src/test/java/TestCpu.java
@@ -47,6 +47,13 @@ public class TestCpu {
     }
 
 
-
+    private static String substring(String src, int start_idx, int end_idx) {
+        byte[] b = src.getBytes();
+        StringBuilder tgt = new StringBuilder();
+        for (int i = start_idx; i <= end_idx; i++) {
+            tgt.append((char) b[i]);
+        }
+        return tgt.toString();
+    }
 
 }
-- 
Gitee