A Starter on Sorting Algorithms
Computers are always on the lookout for information, whether stored on disks or on the network. And these searches only become efficient if the data to be searched is sorted. It’s said that computers spend more time sorting data than anything else, and so it makes sense to understand the different sorting methods and t...
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Pointers and 2-D arrays: A Thumb Rule
How pointers and arrays gel with each other has already been explained rather beautifully in the articles on Pointers: Basics , Pointers:The Array Relation and Pointers: complicated stuff made easy !!
Without taking any credit away from Snoopy :), this is just a small tut on accessing 2D arrays with pointers. Why a sep...
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Java Refresher - JDK & JRE
Java is highly modular which means that it has many components that can function independently of each other. The following is a very basic breakdown of the Java platform.
Java Editions
Java is delivered in two main editions: Java 2 Standard Edition ( J2SE ) and Java 2 Enterprise Edition ( J2EE ). J2SE is also known as ...
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Database Normalization - Part 1
One of the most important concepts in databases is that of Normalization. In this article I'll try to build an understanding on that.
There are two points to understand about tables and columns that are the essence of any database:
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Tables store data about an entity
An entity may be a person, a book, a car or a part ...
VI Editor Basics
VI, visual interface, is a visual editor for the standard UNIX operating system. vi is most commonly used for programming. The following is a table of some basic vi commands. All of the following commands can only be used from command mode. When you first start vi, you are in command mode. If you are ever unsure w...
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OSI Layers - Building blocks of Networking
Whenever we think about computer networking and its implementation, the first thing to come to our mind is the OSI (Open Structure/System Interconnection) model. It is the basic structure of computer networking. OSI is a layered structure of 7 layers. Each layer has its own functionality. Here we will understand the pu...
Read more...Why should we take you?
Chances are that 95% of the times you will blow the answer to this question if you are unprepared for it.
This question will confuse you, as it is flagrantly asking you to start a self-praise. Most people do not know the difference between this and highlighting their strengths without sounding vainglorious or proud.
Best...
Read more...Commonwealth Games 2010 - The Shady Side
The Commonwealth Games XIX, did bring glory to the Indian Nation in terms of the medals (a charming figure of 38-27-36 ;)) and the spectacular opening and closing ceremonies, but not before a lot of controversy had already plagued and even threatened the happening of the event.
Again, let me put the bare facts in front of...
Read more...Resume Format for Freshers
Most of us are confused about how a resume should be structured. Its also important as headings in a resume attract the most attention of recruiters and precise headings positioned properly, along with crisp bullets describing your role can go a very long way in creating that first impression.
While it is very important...
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Latest Jobs
| Job Title | Location |
|---|---|
| Asp.Net/C# Opening with HCL Tech Noida (2-5 yrs) | Noida |
| Jobs at Oracle | 2010, 2011, 2012 Graduates | Delhi/NCR |
| More Jobs at Sopra Group | .Net/BI/Java/Flex/Oracle/ABAP | Noida | Delhi/NCR |
| Java Walk-In for SSE/TL | 12 Nov, 2011 | Sopra, Noida | Noida |
| VERITAS INFOSYSTEMS : WALKIN - SAP FRESHERS (B.E., B.TECH., MCA) | 29th Aug - 3rd Sep | CHENNAI | Delhi/NCR |
| Software Engineer/Sr.Software Engineer (3-6 yrs) - Ernst & Young WALKIN | 29th and 30th Aug | Bangalore | Bangalore |
| GAIL INDIA LIMITED RECRUITMENT OF EXECUTIVE TRAINEES | BE/ BTECH FRESHERS | AUGUST 2011 | Any of the Units/ Divisions/ Project Sites etc. of GAIL. |
Rack your Brain
Is the story true ?
A grandfather tells his grandson about his bravery in war. "I was awarded at the end of World War 1, for my bravery after saving a group of my men," the grandfather says. "You see, we were in a war, fighting in northern France and one of the enemy soldier threw a grenade at us. I managed to pick it......... Read more
Spin the barrel
You and your enemy agrees on a duel. but this time challenge is to play Russian Roulette with a 6-cylinder pistol (meaning it can has 6 bullet slots). He puts 2 bullets into the gun in consecutive slots, and leaves the next four slots blank. He spins the barrel and hands you the gun. You point ......... Read more
Guess the 8 digit number
This is a not so common puzzle asked by the engineering manager during an Adobe interview. Here it goes There exists an eight digit number, which can be represented in the following way: Number: _ _ _ _ _ _ _ _ Position: 0 1 2 3 4 5 6 7 It is given that the digit at ith......... Read more
Find the fastest 3 horses
You have 25 horses. When they race, each horse runs at a different, constant pace. A horse will always run at the same pace no matter how many times it races. You want to figure out which are your 3 fastest horses. You are allowed to race at most 5 horses against each other at a time. You don't hav......... Read more
Weigh the mystery ball
You are given a mystery ball and are told that it has a whole-number weight between 1 and 40 gms (inclusive). You are then given a balance scale are are allowed to pick four weights, each weighing any whole-number amount. You much choose these weights so that no matter what the mystery ball weighs,......... Read more
Break gold bar in three pieces
This is a very famous interview puzzle, and has been asked by companies like Adobe, DeShaw, etc. in interviews. You've got someone working for you for seven days and a gold bar to pay them. The gold bar is segmented into seven connected pieces. You must give them a piece of gold at the end of every......... Read more
Find jar with defective coins
You have 5 jars(A, B, C, D, E), each having 10 coins in it. All coins are similar, except one jar which has defective coins. The non-defective coins weigh 5gms and defective coins weigh 4gms. You are provided with a weight scale. Can you find out the defective jar by using weighing coins in a single......... Read more
Chicken nuggets puzzle
The chicken nuggets in a restaurant are available in 3 packs: 6 piece, 9 piece and 20 piece pack. Find a number n, such that for all numbers bigger than or equal to n, a customer can buy that number of chicken nuggets ? Read more
Einstein's Riddle
Einstein said that only 2% of the world could solve this problem. There are 5 houses in 5 different colors. In each house lives a person with a different nationality. The 5 owners drink a certain type of beverage, smoke a certain brand of cigar, and keep a certain pet. No owners have the same pet,......... Read more
Knight & Dragon puzzle
This is a very famous interview puzzle, and has also been asked in Trilogy interview. There is a knight and dragon, living on an island. There are seven poisoned wells on the island, which are numbered from 1 to 7. If you drink from a well, you can only save yourself by drinking from a higher......... Read more
Trace the cube
If you take a marker & start from a corner on a cube, what is the maximum number of edges you can trace across if you never trace across the same edge twice, never remove the marker from the cube, & never trace anywhere on the cube, except for the corners & edges ? Read more
Whom will you shoot first ?
You are placed in a duel in an amphitheatre in Rome, with two other warriors. Everyone, including you, is provided with a bow and unlimited number of arrows. Now, it is known that accuracy of you hitting a target is 33% and of other two warriors is 50% and 100% [50% accuracy means .5 probability of ......... Read more
Color of Chameleon
In a Zoo, there are 45 chameleons. At a certain point of time, the chameleons divided themselves with respect to their color at that point: 13 green chameleons 15 blue chameleons 17 yellow chameleons Now, from this point of time, whenever two chameleons of different colors will meet, they wi......... Read more
Numbers Grid
You have to place numbers 1 to 8 in the following grid, and make sure that adjacent numbers are not at adjacent positions (horizontally, vertically and diagonally) ===== | 1 | =============| 6 | ......... Read more
Number Pyramid
A Number Pyramid is composed of the 10 different numbers 0-9 with the top row consisting of one number resting on a second row of two numbers resting on a third row of three numbers over a bottom row of four. For example, a Number Pyramid could be: 98 76 5 43 2 1 0Given the clues belo......... Read more
Calendar Cube
You are a new employee in a website designing company. They don't just need a employee who is creative, but also a one who has strong logical skills. You are asked to design a calendar using two cubes which represents all dates of a month (remember, just dates and nothing else) from 01 to 31. Now, y......... Read more
Measure time by burning ropes
You are given 2 different ropes, each having varying thickness through the length. Despite the two ropes being different, it is given that they both burn for exactly 30 seconds each. You have to measure a time period of 45 seconds using these two ropes. Remember, cutting the rope into half doesn't m......... Read more
Shap(e)-o-logic
These are some interesting puzzles related to shapes: An equilateral triangle is given, and it is further divided into four equilateral sub triangles. Now remove one of the sub triangle, and divide the left over shape into four identical shapes. Same, for square. That is, divide a square int......... Read more
Catch the Robber
Steve's shop was robbed once, but thankfully the loot was recovered. There were three suspects; their names were Abby, Iris, and Hagar. At the trial, they made the following statements: Abby: I did not commit the robbery! Iris: Hagar certainly didn't! Hagar: Yes, I did! Later on, two of them con......... Read more
Jug Juggling
Two friends who have an 8 liter jug of water which they wish to share evenly. They also have two empty jars, one that can hold 5 liters, the other 3 liters. How can they have exactly 4 liters of water each? Read more
Bananas and the lucky Monkey
Another Classic puzzle! 3 guys picked a bunch of bananas from a tree together. They got tired at the end of the day and decided to sleep first and then divide the bananas in the morning equally between them. Now, in the middle of the night one of these guys woke up and thought, "I do......... Read more
Poisoned wine for Bad King
There is a bad King, ruler of a medieval empire and he is planning to throw a big party on his 47th birthday. He’s got a cellar of 1000 bottles of delightful and very expensive wine for the day. Now, the neighboring queen, who had plans to kill him, had sent a knight to poison the wine. (......... Read more
Surgeon and gloves
A one armed surgeon with a hand wound needs to operate on three patients. The surgeon only has two gloves. How can he operate on the three patients in turn without risking exchange of any wound fluid? (Remember he only has one arm so he only needs to wear one glove at a time.) Read more
Golden and silver coins in bag
You have 20 golden coins and 14 silver coins in a bag. You put your hand in and remove 2 at a time. If they're of the same type, you add a golden coin to the bag. If they're of different types, you add a silver coin to the bag. (Assume you have a big supply of golden & silver coins for this purp......... Read more
100 prisoners and hats
100 prisoners are lined up in a row by the jailor. The jailor puts red and blue hats on them. They can't see their own hats, but they can see the hats of the people in front of them. The jailor starts in the back and says “what color is your hat?”. The prisoner can only answer "red" or "blue". ......... Read more
Coins lying on table
An even number of coins are placed on a table. You also are aware that there are as many coins with Head up as with Tail up. Now, you are required to divide the coins into two equal piles such that number of coins with Heads up and Tails up in either piles is the same. The catch is you are blind fol......... Read more
Camel and 3000 bananas
The puzzle goes like this: A camel has 3000 bananas, which it has to take from A to B. A and B are separated by a distance of 1000 km.The camel can take only 1000 bananas with it at one time and for every km it needs one banana to eat. What is the maximum number of bananas it can take to B? Read more
Monkey and Bullet
A very common and simple puzzle. It used to be asked interviews a lot, earlier. Remember your physics?? ;) There is a monkey in a forest hanging by a branch of a tree. There is also a hunter with his gun looking for a kill. Now, the hunter spots the monkey, takes aim with the help of the ......... Read more
3 Bindis
There are 3 students Anirban, Bala and Chandu sitting in a circle. Their teacher has 5 bindis with her, 3 white ones and 2 black. She asks all of them to close their eyes and then she sticks one white bindi each to each one of their foreheads. Now they are asked to open their eyes. They are sit......... Read more
Ratio of boys to girls
In a village, a tradition is followed by every family. There needs to be a boy in a family, and each family continues having babies till they have a boy. Can you determine the ratio of boys to girls in such village at any time, assuming that probability of having a girl or boy at any time is sa......... Read more
3 Denominations for food stall tokens
The CWG committee needs to manufacture tokens for food stalls, and the item rates for food varies from Rs.1 to Rs.15. They want to keep the denominations of the tokens in such a way that maximum three tokens be only assigned for any food price. Can you determine those 3 denominations ? Read more
Island of the blue eyed
There is an island upon which a tribe resides. The residents either have blue eyes or brown eyes. Yet, it is taboo to talk about eye color in any way. Thus, one resident can see the eye colors of all other residents but has no way of discovering his own (there are no reflective surfaces). ......... Read more
Defective coin puzzle
You are given 8 identical coins and one of them is defective(heavier or lighter) than others, others weighing exactly the same. A simple balance is provided to you and coins can be placed on both sides. You have been provided with two cases: Firstly, the defect is known. Lets assume the defect is......... Read more
100 storey building and 2 eggs
You are given 2 eggs and a 100 storey building. Now following is the situation: Eggs can be fragile means it may break if dropped from the first floor or may not even break if dropped from 100th floor. From a certain floor and other floors above it, if egg is dropped, it will break. Bot......... Read more
Pills
Anurag is a patient of a deadly disease. His doctor has prescribed him two types of pills - X & Z. Anurag is supposed to eat one pill of each kind every morning (that is; one X & one Z). Plus, he has to eat both of them together, not separately. He has one box of X - pills, & another box......... Read more
Lion or Treasure
Suppose, you are in a prison room with 2 doors opening out. Behind 1 of the doors is a coffer full of jewels and gold, along with an exit to freedom. Behind the other door is an enormous, hungry lion that will pounce on anyone opening the door. You do not know which door leads to the treas......... Read more
The parrot sequence
Parul owns a clever parrot called Pasha which can call out loud numbers read from a piece of paper displayed in front of him. One day Parul wrote the digit 1 on a sheet and showed it to Pasha, who answered “one 1”. Parul wrote down the parrot’s answer “one 1” or ‘11’ on a new sheet and showed i......... Read more
5 Pirates and Gold
5 pirates on a ship have a treasure of 100 gold coins. They all have different ages.One day, they decide to split the coins using the scheme described below:The oldest pirate proposes how to share the coins, and all pirates remaining will vote for or against it.If 50% or more of the pirates vote for......... Read more
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