Skip to main content

P = NP problem and the Valentine's Day Song

Here is a nice Song i found on the Net, which reminds us about the Famous Unsolved Mathematical Problem P = NP .

its a love story
of two strange people
who never knew they could
fall for each other
when they first met
they only ended up fighting
but slowy it became clear to them
that they sure shared something

a small problem happened
when pride overtook him
he thought she was
less smarter than him
she would solve a puzzle
and he would solve it again
he would tell her
that she was simply
an idea away from him...
he said that he always gets this idea
and then he does all that she can
and probably much more...

one day she decided
his behaviour had to be checked
she thought for a while and
then she said...
fine, then you sure
can do everything
but if you are strictly more smart
you have to do the following
think of some puzzle
that you can easily do
and then give it to me
to solve and lets see if
i can't do....

all the king's men and
all the king's horses
could not come up
with a puzzle like this
the duo got closer and
the world around more curious

today as it stands
the puzzle is still not found
and hence the duo
lives happily close bound
they two are well known
as simply, inseparable
P is the queen and
NP the king of our fable...

Hope you all enjoy it.......
Source : Nutan's Blog

Comments

Popular posts from this blog

How to Install Hadoop (2.7.3) on Ubuntu (16.04 LTS)

As I am planning to learn Hadoop, I wanted to install Hadoop (2.7.3) on my Ubuntu (16.04 LTS) and I followed the steps mentioned in the documentation on the Apache Hadoop website. I encountered few problems which are mentioned below, spent some time finding solution to them.

Below are the steps I followed and the description of the error is at the end of this post and also I have mentioned what I missed and what caused these errors.


Step 1. Download Hadoop installation file. For Hadoop 2.7.3 version I used the following link 

http://www.apache.org/dyn/closer.cgi/hadoop/common/hadoop-2.7.3/hadoop-2.7.3-src.tar.gzStep 2. (Assuming you have downloaded the file into /home/<username>/Downloads folder

$ tar zxf hadoop-2.7.3-src.tar.gz
This will extract the files into a folder  "hadoop-2.7.3" .

Step 3. I moved the file to /home/<username> folder (many suggest to move it into /usr/local but I prefer to keep it here, may be once I learn more about linux I might get into tha…

Javascript KeyCode Reference table for Event Handling

The post explains Keyboard event handling using javascript.Javascript events are used to capture user keystrokes. Below is a table of key codes for the keys on a multimedia keyboard. If this table is inconsistent with your own findings, please let me know.

Java Script Code to Find Key code

<script language="JavaScript">
document.onkeydown = checkKeycode
function checkKeycode(e) {
var keycode;
if (window.event) keycode = window.event.keyCode;
else if (e) keycode = e.which;
alert("keycode: " + keycode);
}
</script>


Key Code Reference Table
Key PressedJavascript Key Codebackspace8tab9enter13shift16ctrl17alt18pause/break19caps lock20escape27page up33page down34end35home36left arrow37up arrow38right arrow39down arrow40insert45delete46048149250351452553654755856957a65b66c67d68

Replacing OpenJDK with Oracle JDK in Ubuntu

You can completely remove the OpenJDK and fresh Install Oracle Java JDK by the following steps:
Remove OpenJDK completely by this command:
sudo apt-get purge openjdk-\*Download the Oracle Java JDKhere.
Note: download appropriate file, for example if your system is x64 Ubuntu (i.e, Debian) the download file is named like this: jdk-8u51-linux-x64.tar.gz
To find which version is your OS, check hereCreate a folder named java in /usr/local/by this command:
sudo mkdir -p /usr/local/javaCopy the Downloaded file in the directory /usr/local/java. To do this, cd into directory where downloaded file is located and use this command for copying that file to /usr/local/java/:
sudo cp -r jdk-8u51-linux-x64.tar.gz /usr/local/java/CD into /usr/local/java/ directory and extract that copied file by using this command:
sudo tar xvzf jdk-8u51-linux-x64.tar.gzAfter extraction you must see a folder named jdk1.8.0_51.Update PATH file by opening /etc/profile file by the command sudo nano /etc/profile and past…