基本函数式算法

Some people did not see their works published, like Fermat and Galois; Some people refused to publish any 'imperfect' works despite they had already been great and important (at least from our view point), like Gauss; Some people lost some of their works in fires or wars, like Riemann. We owe Samuel Fermat, who collected his father's notes and mails, published a special edition of Arithmetica, augmented with Fermat's comments; We owe Liouville, who re-discovered and published Galois' papers in Journal de Mathématiques Pures et Appliquées; We owe Dedekind, who collected the burnt notebook from Mrs Riemann after her husband's early death. We appreciate those publishers who save, protect, and spread human knowledge no matter it's profitable or not (in terms of money). The development of technology and internet greatly changes the way that people write, log, edit, and publish things. I was able to write and share about elementary functional algorithms and data structures online from 2009. It was accumulated to a draft book by 2015, and was published in 2017 in Chinese.