摘要:x<-c("I1","I2","I3","I4") t(combn(x,2)) [,1] [,2][1,] "I1" "I2"[2,] "I1" "I3"[3,] "I1" "I4"[4,] "I2" "I3"[5,] "I2" "I4"[6,] "I3" "I4" 用t(
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posted @ 2017-05-12 13:56
posted @ 2017-05-12 13:56
posted @ 2017-05-12 13:54
posted @ 2017-05-12 13:50
posted @ 2017-05-12 13:48