下面的代码
a <- seq(1,101,25)
b <- paste("name", 1:length(a), sep = "_")
生成以下输出:
"name_1" "name_26" "name_51" "name_76" "name_101"
我希望所有值的宽度都相同,这意味着我要用零填充这些值,如下所示:
"name_001" "name_026" "name_051" "name_076" "name_101"
我该怎么处理?
(这个问题与this one有关.)