fix leetcode.com RunCode fix #77

Author: shuzijun

resources/META-INF/plugin.xml

@@ -1,7 +1,7 @@
 <idea-plugin>
     <id>leetcode-editor</id>
     <name>leetcode editor</name>
-    <version>5.3</version>
+    <version>5.4</version>
     <vendor email="shuzijun0109@gmail.com" url="https://github.com/shuzijun/idea-leetcode-plugin">shuzijun</vendor>
 
     <description><![CDATA[
@@ -113,10 +113,10 @@
 
     <change-notes><![CDATA[
          <ul>
-          <li>v5.3<br>
+          <li>v5.4<br>
                 1.修复leetcode.com Run Code 超时问题<br>
             </li>
-            <li>v5.3<br>
+            <li>v5.4<br>
                 1.fix leetcode.com RunCode Wait result timeout<br>
             </li>
             <li>v5.2<br>

src/com/shuzijun/leetcode/plugin/manager/CodeManager.java

@@ -462,8 +462,10 @@ public void run() {
                                 if (jsonObject.getBoolean("run_success")) {
                                     String input = returnObj.getString("test_case");
                                     String output = jsonObject.getJSONArray("code_answer").getString(0);
-                                    String expected = returnObj.getJSONArray("expected_code_answer").getString(0);
-                                    if(StringUtils.isBlank(expected)){
+                                    String expected = "";
+                                    if (returnObj.getJSONArray("expected_code_answer") != null && !returnObj.getJSONArray("expected_code_answer").isEmpty()) {
+                                        expected = returnObj.getJSONArray("expected_code_answer").getString(0);
+                                    } else if (jsonObject.getJSONArray("expected_code_answer") != null && !jsonObject.getJSONArray("expected_code_answer").isEmpty()) {
                                         expected = jsonObject.getJSONArray("expected_code_answer").getString(0);
                                     }
                                     MessageUtils.showInfoMsg("info", PropertiesUtils.getInfo("test.success", input, output, expected));