根据华为5G创新大赛polar code部分提供的材料编写的polar code仿真代码，包含SC、SCL、BP三种译码算法。代码实现过程和所提供的材料保持高度一致，便于理解。(According to the Huawei 5G Innovation Competition Polar Code part ,the code is including SC and SCL two decoding algorithms. The code implementation process is h