Stefan Wagner

I get the same problem on Eclipse Juno (4.2):

assertEquals ("wrong author", "Zethu Mlobeli", article.author)
Most answers I found report that this is the case if your assertion doesn't compare Strings, but my article.author is a String. Unfortunately it is null, and if it isn't, the comparison works as expected.

find . -name "*" -type f -printf "%f\n"

This works for gnu-find. Your find might differ.

Instead of piping, it is often, but not always, a good idea, to use one of the switches: -exec, -execdir, -ok, -okdir. It isn't trivial to use, but powerful.

srikanth sankurthi wrote:which command is used ot view file in linux.

Which kind of file? Java-source/textfile, (less, cat, gedit, nano, mcedit, vi, emacs), image (eog, gimp, ...), video (vlc, mplayer, gxine, ...), pdf (xpdf, evince, acroread), zip, mp3, rar, xml, ...

I can confirm this error with JDK javac 1.6.0_26 on Linux, and got rid of the error with deleting all classfiles in that directory.

I don't have a JDK-1.4 since about 5 years.

Luigi Plinge wrote:Nice solution Stefan. Here are my comments if you're interested.

Yes, thanks for your feedback.

I have to excuse myself by stating, that I solved Euler011 in Feb.2009, and I don't know, which methods where present then, and what was introduced later. Afaik, 'max' wasn't available then.

In your regex, if you put a "+" after your bracket expression, i.e. "[\n\t ]+", this will match 1 or more instances, so you don't need the trim or filter for length > 0. I thought you had to double-escape control characters but it looks like you don't have to with \n or \r or \t (but you do with \s).

Well - Sting.split and [...]+ is from Java, and old enough. That simplifies much, while it isn't measurable for such a small grid. The method returns immediately on my old 2Ghz Laptop. And _.toInt is too more elegant.

It's normal in Scala code to make your indents 2 spaces, because you get more nesting with closures, and chaining functions means that lines tend to be longer. 8 is certainly overkill.

Yes, I've given up my resistance to two-blank indent, and code to the Scala standards, when coding Scala now, but either I use 2 or 8 - nothing in between.
The problem with tabs is, that the REPL tries to autocomplete, if it finds a tab, so tabs aren't usable there. But I never got problems with 8-pos indentation either.

If you use curly braces instead of parentheses in your for-statement, you don't need the semicolons.

Yes. On the other hand - is there a problem with semicolons? They're more easy to type on a german keyboard than curly braces.

I was a bit confused by your maxProduct method because "max" is a function defined in List, until I realised it was a variable. From what I've read, it's better to avoid using vars, unless you have a good reason.

Well - I have a good reason, I want to find the max, and there is no problem, until you find one. Of course, the max-call you use is more elegant, but I think it wasn't available 2009, but a roll-your-own function to use in a fold would have been possible over then too.

(0 /: nSeq) ((a, b) => if (a > b) a else b)

object Euler011 { val sGrid = """ 08 02 22 97 ... ... ... 01 89 19 67 48""" val nGrid = sGrid.split ("[\n\t ]", 0).map (_.trim).filter (_.size > 0).map (Integer.parseInt (_)) def g (row: Int, col: Int) = nGrid (row * 20 + col) var max = 0; def mp (x0: Int, y0: Int, xM: Int, yM: Int, xD: Int, yD: Int) = { for (x <- (x0 to xM); y <- (y0 to yM); f1 = g (x + (0 * xD), y + (0 * yD)); f2 = g (x + (1 * xD), y + (1 * yD)); f3 = g (x + (2 * xD), y + (2 * yD)); f4 = g (x + (3 * xD), y + (3 * yD)); prod = f1 * f2 * f3 * f4; if (prod > max)) { max = prod } } def maxProduct () = { mp (0, 0, 16, 19, 1, 0) // hori mp (0, 0, 19, 16, 0, 1) // verti mp (0, 0, 16, 16, 1, 1) // falling mp (0, 3, 16, 19, 1, -1) // climbing max } def main (args : Array[String]) : Unit = println {maxProduct()} }

public class Test { public static void main (String args []) { System.out.println ("scuccess"); } }
So save this, compile it, run it:
out=$(java Test) echo $out

Chandrasekaran SanthanaKrishnan wrote:anirudh jagithyala,

I did that exactly as you have said.

Its not working.

'Not working' is a poor error description. What didn't work? Did you get an error message? Which? How did you experience that it didn't work? What result did you expect, what did you get?

Note, that you just use one form, and it's the second:
out=$(java Test)
Backticks are deprecated (Ommm, Ommm) because you can't nest them easily. Since classes should wear uppercase initials, you call `java Test`, not `java test`.

Note too, that the initial code was wrong in multiple ways:
public class Test { public static void main (String args []) { System.out.println ("scuccess"); } }
* should be public
* named with capital T
* main method is empty - so nothing happens
* sample-method returns a String, but does no output.

Rahul Sudip Bose wrote:
3 Is there any serious competition to MS in the "office" front ? Long time ago, open office did not seem good enough to me.

What did you miss in concrete?

Sanjeev Ba wrote:
var1=`java Test`

Backticks are deprecated. Instead use $(...). You can nest it easily, and it is better readably.
#!/bin/bash var1=$(java Test) echo $var1

Tim Holloway wrote:If you lose the root password, that's a bigger problem, since you need to be logged in as root in order to issue the passwd command in most cases. To recover from that problem, you'd have to shutdown the machine, boot up into single-user mode (which doesn't require a login) and reset the root password. Then reboot into the normal operating runlevel.

On ubuntu, there is no root login by default. All you do you do as user via sudo, and for sudo you need your own password.

However, you're right in the advice to do a (S)uperuser boot. You do it by booting from grub an entry, marked as ... (recovery mode)

Bhakthavatsala Reddy Boggula wrote:Hi Stefan Wagne, Thanks for your post ..but what are the code tags, please explain clearly.

You pick a bit of code (with indentation, please) (will not be visible if not in code tags, as here:).

public MyAuthenticator(String user, String pass) {
username = user;
password = pass;
}

You mark it with the mouse, and hit the button No. 8 from left in the somehow red border of this field, named 'Code', and, voila!
public MyAuthenticator(String user, String pass) { username = user; password = pass; }

Please use the code tags.
Thank you.

I'm not sure how RedHat manages memory, but afaik, tmpfs is something different from swap, and for free memory you need, if something from an harddrive, then swap.

Swap isn't measured and reported with df but with 'free':
free total used free shared buffers cached Mem: 1025996 947412 78584 0 137824 202856 -/+ buffers/cache: 606732 419264 Swap: 996020 45140 950880
To search for your swap space, you may use fdisk -l with sudo (sda3 on my system):

sudo fdisk -l /dev/sda [sudo] password for stefan: Platte /dev/sda: 40.0 GByte, 40007761920 Byte 255 Köpfe, 63 Sektoren/Spur, 4864 Zylinder Einheiten = Zylinder von 16065 × 512 = 8225280 Bytes Disk identifier: 0xcccdcccd Gerät boot. Anfang Ende Blöcke Id System /dev/sda1 * 1 985 7911981 7 HPFS/NTFS /dev/sda2 986 1981 8000370 83 Linux /dev/sda3 1982 2105 996030 82 Linux Swap / Solaris /dev/sda4 2106 4864 22161667+ 5 Erweiterte /dev/sda5 2106 3101 8000338+ 83 Linux /dev/sda6 3102 4097 8000338+ 83 Linux /dev/sda7 4098 4864 6160896 83 Linux

Can you please edit your initial post and insert some blanks, to allow the layout to break your very long line, please?

Did you, as EFH suggested, check, whether chmod had the desired effect?