("/\d{4}-\d{5}/"),
("/^\d{4}-\d{5}^/"),
("/\d{4}-\d{5} $/")
这样的选项,我没考到这个但有朋友说考过
3, 输入第四条的时候,lag2(cost)是什么
. Χ
REP COST
SMITH 20
SMITH 23
JONES 10
SMITH 25
4. Which perl regular expression can represent 5MQ, 5:MQ, 8MQ, or 8:MQ
prxmatch('<insert expression>', x).
(5|8):MQ?
(5:MQ) | (8:MQ)
(5:MQ?) | (8:MQ?)
这题考到了,这三个我都没选我选的另一个但是啥我不记得了
5. Which perl regular expression can replace MOUSE with RAT in prxmatch?
'\s\MOUSE\RAT'
'\s\RAT\MOUSE'
'\r\MOUSE\RAT'
'\r\RAT\MOUSE'
这个我也是蒙了一个,自己 run 一下吧
6. 填空 What's the value of total?. Waral dи,
work.numbers 如下. ----
T
--
6
7.
8
data work.move;
set work.numbers;.1point3acres
if _N_=3 then total=sum(T, lag1(T), lag2(T));.google и
run;
答案是 8
N 和 age 那题我抄下原题了,我不知道前辈们怎么跑出来的
call the sorted compiled macro check15 with the value10 as a positional parameter
what is the name of the parameter?
what is the name of the dataset variable evaluated by if condition?. 1point 3 acres