摘要:
There is an objective test result such as “OOXXOXXOOO”. An ‘O’ means a correct answer of a problemand an ‘X’ means a wrong answer. The... 阅读全文
摘要:
Some DNA sequences exist in circular forms as in the following figure, which shows a circular sequence “CGAGTCAGCT”, that is, the la... 阅读全文
摘要:
For a positive integer N, the digit-sum of N is defined as the sum of N itself and its digits. When M is the digitsum of N, we call N... 阅读全文
摘要:
MasterMind is a game for two players. One of them, Designer, selects a secret code. The other, Breaker, tries to break it. A code is n... 阅读全文