1 files changed, 10 insertions, 10 deletions
diff --git a/js/codeq/problem.js b/js/codeq/problem.js
index 464dc12..7ae54d8 100644
--- a/js/codeq/problem.js
+++ b/js/codeq/problem.js
@@ -151,10 +151,11 @@
         createLanguageData = function (data, languageIdentifier) { // data is the content of language.json
             var li = languageIdentifier, // a shorthand
                 rawTranslations = data.translations || {},
-                groups = data.groups || {},
+                groups = data.groups || [],
+                Ngroups = groups.length,
                 html = [],
                 problemReferences = [],
-                groupIdentifier, group, problems, problemIdentifier, problem;
+                group, problems, Nproblems, problem, i, j;
             var langDict = convertTranslations(rawTranslations, 'name', 'description'), // this will be the resulting dictionary: multi-level keys that lead up to the lang-dict
                 groupDict, problemDict;
             // title: HTML structure for "name" and "desc"
@@ -162,22 +163,21 @@
             html.push('<div class="language-description translatable" ', ta(langDict.description), '></div>');
             // content: problem directory
             html.push('<ul class="language-problems">');
-            for (groupIdentifier in groups) {
-                if (!groups.hasOwnProperty(groupIdentifier)) continue;
-                group = groups[groupIdentifier] || {};
+            for (i = 0; i < Ngroups; i++) {
+                group = groups[i] || {};
                 groupDict = convertTranslations(group.translations, 'name', 'description'); // the group-level translations, added will
                 // group content
                 html.push('<li><div class="group-title translatable" ', ta(groupDict.name), '></div>');
                 html.push('<div class="group-description translatable" ', ta(groupDict.description), '></div>');
                 html.push('<ul class="group-problems">');
                 // problem content
-                problems = group.problems || {};
-                for (problemIdentifier in problems) {
-                    if (!problems.hasOwnProperty(problemIdentifier)) continue;
-                    problem = problems[problemIdentifier] || {};
+                problems = group.problems || [];
+                Nproblems = problems.length;
+                for (j = 0; j < Nproblems; j++) {
+                    problem = problems[j] || {};
                     problemDict = convertTranslations(problem.translations, 'name');
                     html.push('<li><a class="problem-', '' + problemReferences.length, ' translatable" ', ta(problemDict.name), '></a></li>');
-                    problemReferences.push({'g': groupIdentifier, 'p': problemIdentifier, 'id': problem.id});
+                    problemReferences.push({'g': group.identifier || 'nogroup', 'p': problem.identifier || 'noproblem', 'id': problem.id});
                 }
                 html.push('</ul></li>');
             }