Measure Udacity - Intro to Computer ScienceYouTube↗  IA↗(long shot)
Education  19.2K views 17 likes 0 dislikes   29 May 2012
Udacity 651K subscribers United States YouTube↗


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[Evans] For this quiz, which is an especially udacious one,
[Evans] 对于这个很具Udacity特色的小测验，
your goal is to define a procedure, named measure_udacity,
你的目标时定义一个名为measure_udacity的过程，
that takes as its input a list of strings
这个过程以一个字符串列表作为输入，
and outputs a number that is a count of the number of elements in the input list
并输出一个表示输入列表元素个数的数字，
that start with the letter U, where U has to be upper case
这个列表以字母U打头，U为大写
since lower case Us are not quite udacious enough for us.
因为小写的u在我们看来不足以表现Udacity的特色。
For example, if we evaluated measure_udacity passing in as input
例如，如果我们通过传入输入求measure_udacity的值
the list containing the strings Dave, Sebastian, and Katy,
而这个列表包含字符串Dave，Sebastian和Katy，
the result would unfortunately be a 0
那么结果将很不幸地为0，
since none of those strings start with an upper case U.
因为，这些字符串中没有一个以大写U打头。
If we instead passed in the list containing the strings Umika and Umberto,
如果我们转而传入包含Umika和Umberto字符串的列表，
the result would be 2 since we have 2 strings that both start with the capital letter U.
结果将是2，因为我们有两个以大写U打头的字符串。
See if you can define the procedure measure_udacity.
你试试能否定义measure_udacity这个过程。
I can't claim that this will be a really useful procedure,
我不能说这个过程非常有用，
but it will be a good test of whether you understand how to use a for-loop
但是，这能很好地测试你是否明白怎么使用一个for循环
to go through the elements of a list.
来遍历一个列表中的元素。
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