wgpshashank

#Problem= Given N, arrange all numbers from 1 to N such that the average of any two numbers in the list #does not lie between them. 

#if this doesn't run, "gem install memoize" add sudo in front if you don't use RVM to manage your gems

require 'rubygems'
require 'memoize'
require 'benchmark'
include Memoize

def good_list(n)

wgpshashank

How Auto Suggestion Works e.g. How Google Won User's Heart

You've seen search engines suggest queries when you begin typing the first few letters of your search string. This is being done by Duck Duck Go as well as Google (to name a few). This is typically done by maintaining 
a list of past queries and/or important strings that the search engine thinks are worthy of being suggested to a user that is trying to find something similar. These suggestions are effective only if the search engine
spits them out very fast since these should show up on the screen before the user has finished typing what he/she wanted to type. Hence the speed with which these suggestions are made is very critical to the usefulness of this feature.

Let us consider a situation (and a possible way of approaching this problem) in which when a user enters the first few letters of a search query, he/she is presented with some suggestions that have as their prefix, 
the string that the user has typed. Furthermore, these suggestions should 

wgpshashank

Problem:
A mathematician G. H. Hardy was on his way to visit his collaborator S. Ramanujan an who was in the hospital. Hardy remarked to Ramanujan that he traveled in taxi cab number 1729 which seemed a dull one and he hoped it was not a bad omen. To this, Ramanujan( Math Guy) replied that 1729 was a very interesting number-it was the smallest number expressible as the sum of cubes of two numbers in two different ways. 
Indeed, 10^3 + 9^3 =12^3 + 1^3 = 1729.

Hint: This problem is very similar to another very popular problem that is asked in interviews. 
You are given a  η ×η matrix in which both rows and columns are sorted in ascending order and you are supposed
to find a given number in the matrix.


Algorithm:

xaviershay

package com.squareup.alcatraz.auth;

import com.google.common.base.Optional;
import com.unboundid.ldap.sdk.Filter;
import com.unboundid.ldap.sdk.LDAPConnection;
import com.unboundid.ldap.sdk.LDAPException;
import com.unboundid.ldap.sdk.ResultCode;
import com.unboundid.ldap.sdk.SearchRequest;
import com.unboundid.ldap.sdk.SearchResult;
import com.unboundid.ldap.sdk.SearchResultEntry;

nikcub

In August 2007 a hacker found a way to expose the PHP source code on facebook.com. He retrieved two files and then emailed them to me, and I wrote about the issue:

http://techcrunch.com/2007/08/11/facebook-source-code-leaked/

It became a big deal:

http://www.techmeme.com/070812/p1#a070812p1

The two files are index.php (the homepage) and search.php (the search page)