Does anyone have the answer to 7.1.5: Go Through the Fence karel on Codehs?

How will you cite information that is common knowledge in your research paper?

The great length of north america causes the climate to be varied. true false

The following function returns a string of length n whose characters are all 'x'. give the order of growth (as a function of n) of the running time. recall that concatenating two strings in java takes time proportional to the sum of their lengths. public static string f(int n) { if (n == 0) return ""; if (n == 1) return "x"; return f(n/2) + f(n - n/2); } options: a) constant b) logarithmic c) linear d) linearithmic e)quadratic f)cubic g) exponential