Revert "The final homework of Computer Simulation Physics in Tsinghua by Shi Zeng"

This reverts commit af4f3310b7446c090075cb477c885f19ca0390a9.
Revert "Revert "The final homework of Computer Simulation Physics in Tsinghua by Shi Zeng""

This reverts commit 2fc51f840c184d91ea0e98275c304a6c3d9219c2.
Revert "Revert "Revert "The final homework of Computer Simulation Physics in Tsinghua by Shi Zeng"""

This reverts commit 6545c714887a85d19672f9dcf34b2a336f667b1f.
The final homework of Computer Simulation Physics in Tsinghua by Shi Zeng