统计狂魔吧 关注：3,091贴子：4,793
楼主这一提用R咋做，急求啊，时间紧迫，求速回贴
大神，求救一下，搞不懂他是要什么意思？（说代码里不许用for和while）
Question 1) Writing a Caesar shift variant cipher
Inthis cipher, we will operate over binary data instead of lower case charactersand we use XOR instead of shifting to encode each character.
Givena key k of type char
Givenan input of type char-array, produce an output ofthe same length such that the ith character of the output is ith characterof input k
Part a)
Writea function in R to perform a variant of the Caesar shift. Itshould take a char-arrays input and a char key, and return a char-array that isthe encoded text
Part b)
Writea function as in a) that takes an extra integer parameter n.Instead of shifting every character, shift only every n’thcharacter
Question 1) Writing a Caesar shift variant cipher
Inthis cipher, we will operate over binary data instead of lower case charactersand we use XOR instead of shifting to encode each character.
Givena key k of type char
Givenan input of type char-array, produce an output ofthe same length such that the ith character of the output is ith characterof input k
Part a)
Writea function in R to perform a variant of the Caesar shift. Itshould take a char-arrays input and a char key, and return a char-array that isthe encoded text
Part b)
Writea function as in a) that takes an extra integer parameter n.Instead of shifting every character, shift only every n’thcharacter
