Week6 (Apr 22)

151. Reverse Words in a String

Question

Given an input string s, reverse the order of the words.

A word is defined as a sequence of non-space characters. The words in s will be separated by at least one space.

Return a string of the words in reverse order concatenated by a single space.

Note that s may contain leading or trailing spaces or multiple spaces between two words. The returned string should only have a single space separating the words. Do not include any extra spaces.

Hand in homework before Saturday.

woody的作業
Roger的作業
xander的作業
Wen的作業
Allen的作業
…Continue filling by yourself

50. Pow(x, n)

Question

Implement

$pow(x,n)$, which calculates

$x$ raised to the power

$n$ (i.e.,

$x^n$).

Hand in homework before Saturday.

woody的作業
Roger的作業
xander的作業
Wen的作業
Allen的作業
…Continue filling by yourself