Sunday, 28 August 2011
Tuesday, 23 August 2011
Data Structures Apptitude Questions
1. What is data structure?
A data structure is a way of organizing data that considers not only the items stored, but also their relationship to each other. Advance knowledge about the relationship between data items allows designing of efficient algorithms for the manipulation of data.
2. List out the areas in which data structures are applied extensively?
- Compiler Design,
- Operating System,
- Database Management System,
- Statistical analysis package,
- Numerical Analysis,
- Graphics,
- Artificial Intelligence,
- Simulation
3. What are the major data structures used in the following areas : RDBMS, Network data model & Hierarchical data model.
- RDBMS – Array (i.e. Array of structures)
- Network data model – Graph
- Hierarchical data model – Trees
4. If you are using C language to implement the heterogeneous linked list, what pointer type will you use?
The heterogeneous linked list contains different data types in its nodes and we need a link, pointer to connect them. It is not possible to use ordinary pointers for this. So we go for void pointer. Void pointer is capable of storing pointer to any type as it is a generic pointer type.
5. Minimum number of queues needed to implement the priority queue?
Two. One queue is used for actual storing of data and another for storing priorities.
6. What is the data structures used to perform recursion?
Stack. Because of its LIFO (Last In First Out) property it remembers its ‘caller’ so knows whom to return when the function has to return. Recursion makes use of system stack for storing the return addresses of the function calls.
Every recursive function has its equivalent iterative (non-recursive) function. Even when such equivalent iterative procedures are written, explicit stack is to be used.
7. What are the notations used in Evaluation of Arithmetic Expressions using prefix and postfix forms?
Polish and Reverse Polish notations.
more>>>>>
Friday, 19 August 2011
What Is SQL?
SQL: Data Types
more>>>>>
The following is a list of general SQL datatypes that may not be supported by all relational databases.
Data Type | Syntax | Explanation (if applicable) |
integer | integer | |
smallint | smallint | |
numeric | numeric(p,s) | Where p is a precision value; s is a scale value. For example, numeric(6,2) is a number that has 4 digits before the decimal and 2 digits after the decimal. |
decimal | decimal(p,s) | Where p is a precision value; s is a scale value. |
real | real | Single-precision floating point number |
double precision | double precision | Double-precision floating point number |
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Thursday, 18 August 2011
C Apptitude Questions
Predict the output or error(s) for the following:
1. void main()
{
int const * p=5;
printf("%d",++(*p));
}
Answer:
Compiler error: Cannot modify a constant value.
Explanation:
p is a pointer to a "constant integer". But we tried to change the value of the "constant integer".
2. main()
{
char s[ ]="man";
int i;
for(i=0;s[ i ];i++)
printf("\n%c%c%c%c",s[ i ],*(s+i),*(i+s),i[s]);
}
Answer:
mmmm
aaaa
nnnn
Explanation:
s[i], *(i+s), *(s+i), i[s] are all different ways of expressing the same idea. Generally array name is the base address for that array. Here s is the base address. i is the index number/displacement from the base address. So, indirecting it with * is same as s[i]. i[s] may be surprising. But in the case of C it is same as s[i].
3. main()
{
float me = 1.1;
double you = 1.1;
more>>>>>
1. void main()
{
int const * p=5;
printf("%d",++(*p));
}
Answer:
Compiler error: Cannot modify a constant value.
Explanation:
p is a pointer to a "constant integer". But we tried to change the value of the "constant integer".
2. main()
{
char s[ ]="man";
int i;
for(i=0;s[ i ];i++)
printf("\n%c%c%c%c",s[ i ],*(s+i),*(i+s),i[s]);
}
Answer:
mmmm
aaaa
nnnn
Explanation:
s[i], *(i+s), *(s+i), i[s] are all different ways of expressing the same idea. Generally array name is the base address for that array. Here s is the base address. i is the index number/displacement from the base address. So, indirecting it with * is same as s[i]. i[s] may be surprising. But in the case of C it is same as s[i].
3. main()
{
float me = 1.1;
double you = 1.1;
more>>>>>
Wednesday, 17 August 2011
Google Tricks – Google Hacking
1. Google trick to search different file formats (keyword filetype:doc)
2. Google trick to search educational resources (keyword site:.edu) example (computer site:.edu)
3. Finding the time of any location (time romania)
4. Finding the weather of any location (boston weather)
5. Tracking commentary of live events (Olympic games Beijing 2008)
6. Using Google as a calculator (9 * 10)(143+234)(119-8)
7. Converting currencies (1 USD in INR)(10 US Dollars in Indian Rupee)
8. Find how many teaspoons are in a quarter cup (quarter cup in teaspoons)
9. How many seconds there are in a year (seconds in a year)
10. Tracking stocks (stocks:MSFT)
11. Finding faces (add imgtype=face to the URL)
2. Google trick to search educational resources (keyword site:.edu) example (computer site:.edu)
3. Finding the time of any location (time romania)
4. Finding the weather of any location (boston weather)
5. Tracking commentary of live events (Olympic games Beijing 2008)
6. Using Google as a calculator (9 * 10)(143+234)(119-8)
7. Converting currencies (1 USD in INR)(10 US Dollars in Indian Rupee)
8. Find how many teaspoons are in a quarter cup (quarter cup in teaspoons)
9. How many seconds there are in a year (seconds in a year)
10. Tracking stocks (stocks:MSFT)
11. Finding faces (add imgtype=face to the URL)
Google Operators
Google Operators:- Definition For Google Keywords
1. define: – This google operator will find definitions for a certain term or word over the Internet. Very useful when you come across a strange word when writing a post. I use this as a google dictionary. example : (define Computer)
2. info: – The google info operator will list the sets of information that Google has from a specific website (i.e. info:http://google.com)
3. site: – This google operator can be used to see the number of indexed pages on your site (i.e.site:www.google.com). Alternative it can also be used to search for information inside a specific site or class of sites.
4. link: – This google link operator allows you to find backlinks pointing to your site. Unfortunately the count is not updated frequently and not all backlinks are shown
5. allinurl: – Using this Google operator will limit the search to results that contain the desired keywords on the URL structure. (i.e. allinurl:dailyblogtips)
6. fileformat: – Useful Google operator for finding specific file formats. Sometimes you know that the information you are looking for is likely to be contained in a PDF document or on a PowerPoint presentation, for instance. (i.e. “fileformat:.pdf market research” will search for PDF documents that contain the terms “market” and “research”)
1. define: – This google operator will find definitions for a certain term or word over the Internet. Very useful when you come across a strange word when writing a post. I use this as a google dictionary. example : (define Computer)
2. info: – The google info operator will list the sets of information that Google has from a specific website (i.e. info:http://google.com)
3. site: – This google operator can be used to see the number of indexed pages on your site (i.e.site:www.google.com). Alternative it can also be used to search for information inside a specific site or class of sites.
4. link: – This google link operator allows you to find backlinks pointing to your site. Unfortunately the count is not updated frequently and not all backlinks are shown
5. allinurl: – Using this Google operator will limit the search to results that contain the desired keywords on the URL structure. (i.e. allinurl:dailyblogtips)
6. fileformat: – Useful Google operator for finding specific file formats. Sometimes you know that the information you are looking for is likely to be contained in a PDF document or on a PowerPoint presentation, for instance. (i.e. “fileformat:.pdf market research” will search for PDF documents that contain the terms “market” and “research”)
Tuesday, 16 August 2011
HR Interview Questions
Now Get Answer How To Response To The Interviewer!!!!!!!!!!!
1. Tell me about yourself:
The most often asked question in interviews. You need to have a short statement prepared in your mind. Be careful that it does not sound rehearsed. Limit it to work-related items unless instructed otherwise. Talk about things you have done and jobs you have held that relate to the position you are interviewing for. Start with the item farthest back and work up to the present.
2. Why did you leave your last job?
Stay positive regardless of the circumstances. Never refer to a major problem with management and never speak ill of supervisors, co- workers or the organization. If you do, you will be the one looking bad. Keep smiling and talk about leaving for a positive reason such as an opportunity, a chance to do something special or other forward- looking reasons.
3. What experience do you have in this field?
Speak about specifics that relate to the position you are applying for. If you do not have specific experience, get as close as you can.
4. Do you consider yourself successful?
You should always answer yes and briefly explain why. A good explanation is that you have set goals, and you have met some and are on track to achieve the others.
5. What do co-workers say about you?
Be prepared with a quote or two from co-workers. Either a specific statement or a paraphrase will work. Jill Clark, a co-worker at Smith Company, always said I was the hardest workers she had ever known. It is as powerful as Jill having said it at the interview herself.
6. What do you know about this organization?
This question is one reason to do some research on the organization before the interview. Find out where they have been and where they are going. What are the current issues and who are the major players?
7. What have you done to improve your knowledge in the last year?
Try to include improvement activities that relate to the job. A wide variety of activities can be mentioned as positive self-improvement. Have some good ones handy to mention.
8. Are you applying for other jobs?
Be honest but do not spend a lot of time in this area. Keep the focus on this job and what you can do for this organization. Anything else is a distraction.
9. Why do you want to work for this organization?
This may take some thought and certainly, should be based on the research you have done on the organization. Sincerity is extremely important here and will easily be sensed. Relate it to your long-term career goals.
10. Do you know anyone who works for us?
Be aware of the policy on relatives working for the organization. This can affect your answer even though they asked about friends not relatives. Be careful to mention a friend only if they are well thought of.
11. What kind of salary do you need?
A loaded question. A nasty little game that you will probably lose if you answer first. So, do not answer it. Instead, say something like, That's a tough question. Can you tell me the range for this position? In most cases, the interviewer, taken off guard, will tell you. If not, say that it can depend on the details of the job. Then give a wide range.
12. Are you a team player?
You are, of course, a team player. Be sure to have examples ready. Specifics that show you often perform for the good of the team rather than for yourself are good evidence of your team attitude. Do not brag, just say it in a matter-of-fact tone. This is a key point.
13. How long would you expect to work for us if hired?
Specifics here are not good. Something like this should work: I'd like it to be a long time. Or As long as we both feel I'm doing a good job.
14. Have you ever had to fire anyone? How did you feel about that?
This is serious. Do not make light of it or in any way seem like you like to fire people. At the same time, you will do it when it is the right thing to do. When it comes to the organization versus the individual who has created a harmful situation, you will protect the organization. Remember firing is not the same as layoff or reduction in force.
15. What is your philosophy towards work?
The interviewer is not looking for a long or flowery dissertation here. Do you have strong feelings that the job gets done? Yes. That's the type of answer that works best here. Short and positive, showing a benefit to the organization.
1. Tell me about yourself:
The most often asked question in interviews. You need to have a short statement prepared in your mind. Be careful that it does not sound rehearsed. Limit it to work-related items unless instructed otherwise. Talk about things you have done and jobs you have held that relate to the position you are interviewing for. Start with the item farthest back and work up to the present.
2. Why did you leave your last job?
Stay positive regardless of the circumstances. Never refer to a major problem with management and never speak ill of supervisors, co- workers or the organization. If you do, you will be the one looking bad. Keep smiling and talk about leaving for a positive reason such as an opportunity, a chance to do something special or other forward- looking reasons.
3. What experience do you have in this field?
Speak about specifics that relate to the position you are applying for. If you do not have specific experience, get as close as you can.
4. Do you consider yourself successful?
You should always answer yes and briefly explain why. A good explanation is that you have set goals, and you have met some and are on track to achieve the others.
5. What do co-workers say about you?
Be prepared with a quote or two from co-workers. Either a specific statement or a paraphrase will work. Jill Clark, a co-worker at Smith Company, always said I was the hardest workers she had ever known. It is as powerful as Jill having said it at the interview herself.
6. What do you know about this organization?
This question is one reason to do some research on the organization before the interview. Find out where they have been and where they are going. What are the current issues and who are the major players?
7. What have you done to improve your knowledge in the last year?
Try to include improvement activities that relate to the job. A wide variety of activities can be mentioned as positive self-improvement. Have some good ones handy to mention.
8. Are you applying for other jobs?
Be honest but do not spend a lot of time in this area. Keep the focus on this job and what you can do for this organization. Anything else is a distraction.
9. Why do you want to work for this organization?
This may take some thought and certainly, should be based on the research you have done on the organization. Sincerity is extremely important here and will easily be sensed. Relate it to your long-term career goals.
10. Do you know anyone who works for us?
Be aware of the policy on relatives working for the organization. This can affect your answer even though they asked about friends not relatives. Be careful to mention a friend only if they are well thought of.
11. What kind of salary do you need?
A loaded question. A nasty little game that you will probably lose if you answer first. So, do not answer it. Instead, say something like, That's a tough question. Can you tell me the range for this position? In most cases, the interviewer, taken off guard, will tell you. If not, say that it can depend on the details of the job. Then give a wide range.
12. Are you a team player?
You are, of course, a team player. Be sure to have examples ready. Specifics that show you often perform for the good of the team rather than for yourself are good evidence of your team attitude. Do not brag, just say it in a matter-of-fact tone. This is a key point.
13. How long would you expect to work for us if hired?
Specifics here are not good. Something like this should work: I'd like it to be a long time. Or As long as we both feel I'm doing a good job.
14. Have you ever had to fire anyone? How did you feel about that?
This is serious. Do not make light of it or in any way seem like you like to fire people. At the same time, you will do it when it is the right thing to do. When it comes to the organization versus the individual who has created a harmful situation, you will protect the organization. Remember firing is not the same as layoff or reduction in force.
15. What is your philosophy towards work?
The interviewer is not looking for a long or flowery dissertation here. Do you have strong feelings that the job gets done? Yes. That's the type of answer that works best here. Short and positive, showing a benefit to the organization.
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