[正则表达式](%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8F.md) [面向对象](%E9%9D%A2%E5%90%91%E5%AF%B9%E8%B1%A1.md) [设计模式](%E8%AE%BE%E8%AE%A1%E6%A8%A1%E5%BC%8F.md) [算法部分](%E7%AE%97%E6%B3%95%E9%83%A8%E5%88%86.md) [华为题库](%E5%8D%8E%E4%B8%BA%E9%A2%98%E5%BA%93.md)