Go contests 101 or Go Practice / Algorithms * https://github.com/CyC2018/CS-Notes/blob/master/docs/notes/%E5%89%91%E6%8C%87%20offer%20%E9%A2%98%E8%A7%A3.md#3-%E6%95%B0%E7%BB%84%E4%B8%AD%E9%87%8D%E5%A4%8D%E7%9A%84%E6%95%B0%E5%AD%97 * https://github.com/CyC2018/CS-Notes/blob/master/docs/notes/Leetcode%20%E9%A2%98%E8%A7%A3.md * https://github.com/CyC2018/CS-Notes/blob/master/docs/notes/%E7%AE%97%E6%B3%95.md find major * https://github.com/CyC2018/CS-Notes/blob/master/docs/notes/%E5%89%91%E6%8C%87%20offer%20%E9%A2%98%E8%A7%A3.md#39-%E6%95%B0%E7%BB%84%E4%B8%AD%E5%87%BA%E7%8E%B0%E6%AC%A1%E6%95%B0%E8%B6%85%E8%BF%87%E4%B8%80%E5%8D%8A%E7%9A%84%E6%95%B0%E5%AD%97 find numbers of odd appearance times * https://github.com/CyC2018/CS-Notes/blob/master/docs/notes/%E5%89%91%E6%8C%87%20offer%20%E9%A2%98%E8%A7%A3.md#56-%E6%95%B0%E7%BB%84%E4%B8%AD%E5%8F%AA%E5%87%BA%E7%8E%B0%E4%B8%80%E6%AC%A1%E7%9A%84%E6%95%B0%E5%AD%97