擅长:python、mysql、java
<p>您最初有一个R标记,不确定您是否愿意接受R解决方案,但这里是:</p>
<pre><code>NN <- 2 #"repeat N times..."
DF <- data.frame("Block ID" = LETTERS[1:3],
"Stage ID" = paste0(rep(c("AAA", "BBB"), each = 3 * NN),
rep(1:NN, each = 3)))
write.csv(DF, file = "file.csv")
</code></pre>