why does the output of `ls` look different when piped through “tr “\n” “\n”`?

The man page for tr(1) says: tr – translate or delete characters SYNOPSIS tr [OPTION]… SET1 [SET2] DESCRIPTION Translate, squeeze, and/or delete characters from standard input, writing to standard output. So as far as I can tell, that means that it takes “\n” and then replaces it with “\n” [which means nothing gets changed]. But…

Details

Check if 2D LinkedHashSet contains a specific string

I am trying to find whether a specific string value is found within a 2D LinkedHashSet I have created. Here is some code for the initialization of the LinkedHashSet: LinkedHashSet<LinkedHashSet<String>> block = new LinkedHashSet<LinkedHashSet<String>>(); I have tried using .contains like this but it seems to be an incorrect argument type: int N = Integer.parseInt(b1.readLine()); for(int…

Details