我有很长的字符串列表,例如这个机器可读的例子:
A <- list(c("Biology","Cell Biology","Art","Humanities, Multidisciplinary; Psychology, Experimental","Astronomy & Astrophysics; Physics, Particles & Fields","Economics; Mathematics, Interdisciplinary Applications; Social Sciences, Mathematical Methods","Geriatrics & Gerontology","Gerontology","Management","Operations Research & Management Science","Computer Science, Artificial Intelligence; Computer Science, Information Systems; Engineering, Electrical & Electronic","Economics; Mathematics, Interdisciplinary Applications; Social Sciences, Mathematical Methods; Statistics & Probability"))
所以它看起来像这样:
> A
[[1]]
[1] "Biology"
[2] "Cell Biology"
[3] "Art"
[4] "Humanities, Multidisciplinary; Psychology, Experimental"
[5] "Astronomy & Astrophysics; Physics, Particles & Fields"
[6] "Economics; Mathematics, Interdisciplinary Applications; Social Sciences, Mathematical …