我想從CSV文件加載數組。這裏是代碼Find non-duplicate items between two arrays with Java 這項工作? ReadFile file = new ReadFile(file_name);
String[ ] aryLines = file.OpenFile();
在R, 我的5個獨特的元件的載體: X<-c("A","B","C","D","E")
重複元素的向量: Y<- c("A","C","M","Z","B","C","C","R","V","D","D","B","A","V","E","E")
我想獲得Y的元素的位置,X中的a是一個矩陣的rownames。 但Y[match(Y,X)]給出: [1] "A" "M" NA NA "C"