func：实现了排序功能。

public_def.cpp

@@ -46,3 +46,25 @@ QString CUtil::select_file(QWidget* parent, const QString& info, const QString&
         QFileDialog::getOpenFileName(parent, info, QDir::homePath(), filter);
     return filePath;
 }
+
+void CUtil::sort_by_repeat(std::vector<std::string>& vec)
+{
+	std::size_t len1 = 0;
+	std::size_t len2 = 0;
+	std::size_t cur = 0;
+	auto compare = [&](const std::string& str1, const std::string& str2) {
+		len1 = str1.size();
+		len2 = str2.size();
+		if (cur >= len1 || cur >= len2) {
+			return len1 > len2;
+		}
+		return str1[cur] > str2[cur];
+	};
+	std::size_t max_len = 0;
+	for (const auto& data : vec) {
+		max_len = data.size() > max_len ? data.size() : max_len;
+	}
+	for (cur = 0; cur < max_len; ++cur) {
+		std::sort(vec.begin(), vec.end(), compare);
+	}
+}