使用这样的数据框
df <- data.frame(Season=c("1992","1993","1993"),
Team=c("Man Utd.","Blackburn","Blackburn"),
Player=c("Peter Schmeichel(42)","Tim Flowers(39)","Bobby Mimms(4)"),
Order = c(1,1,2))
我如何做到这一点
1992 Man Utd. Peter Schmeichel(42)
1993 Blackburn Tim Flowers(39) Bobby Mimms(4)