如何将id列添加到数据帧

我是 rbind k )的数据帧变成一个单一的数据框( current_output ).

id 列到我的结果数据框这样我就可以 desred_output 在R基地?

k = list(A = data.frame(d = 1, n = 2), B = data.frame(d = 1:2, n = 2:3))

current_output = do.call(rbind, k)
#    d n
#A   1 2
#B.1 1 2
#B.2 2 3

desired_ouput1 = data.frame(id = c(1,2,2), d = c(1,1:2), n = c(2,2:3))
#  id d n
#1  1 1 2
#2  2 1 2
#3  2 2 3

desired_ouput2 = data.frame(id = c(A,B,B), d = c(1,1:2), n = c(2,2:3))
#  id d n
#1  A 1 2
#2  B 1 2
#3  B 2 3