[1、一个小时4个算法题：hardMan（）](1%E3%80%81%E4%B8%80%E4%B8%AA%E5%B0%8F%E6%97%B64%E4%B8%AA%E7%AE%97%E6%B3%95%E9%A2%98%EF%BC%9AhardMan%EF%BC%88%EF%BC%89.md) [2、打家劫舍2](2%E3%80%81%E6%89%93%E5%AE%B6%E5%8A%AB%E8%88%8D2.md) [3、打家劫舍3](3%E3%80%81%E6%89%93%E5%AE%B6%E5%8A%AB%E8%88%8D3.md) [4、最长字符串链（leecode的1048题）](4%E3%80%81%E6%9C%80%E9%95%BF%E5%AD%97%E7%AC%A6%E4%B8%B2%E9%93%BE%EF%BC%88leecode%E7%9A%841048%E9%A2%98%EF%BC%89.md)