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Sciences Interview Questions
Questions Answers Views Company eMail

what are the role of MR

4 8399

what are the different by which a new molecule can be characterised ?

Cipla, Reddy Labs,

2 6261

give an example of secondary standard (solution).

1 5301

the resolutions of a michelson interferometer operating with a light source of 640nm wavelenth is A.1280nm B.640nm C.80 nm D.1nm

CSIR,

3162

Project 2 - Magic Squares design2.txt - due 12/7 before 11:59 PM project2 - due 12/13, before 11:59 PM Orginally by Sue Evans Hit the space bar for next page The Objectives The purpose of this assignment is to give you practice with: recursion using command line arguments using the timing feature and file handling. The Background According to The Math Forum @ Drexel University, A Magic Square is an arrangement of the numbers 1 to n2 in an n x n matrix with each number occuring exactly once, and such that the sum of the entries of any row, any column, or any main diagonal is the same. It is not hard to show that this sum is n(n2 + 1)/2. The simplest magic square is the 1 x 1 magic square whose only entry is the number 1. 1 The next simplest is the 3 x 3 magic square. (8 + 1 + 6) or 3(32 + 1)/2 This is also just ONE of many examples for a 3 x 3 Magic Square!! This 3 x 3 square is definitely magic and satisfies the definition given above. There are 8 different arrangements of entries in a 3 x 3 matrix that fit the definition of a magic square. There are also magic squares of size 4 x 4, 5 x 5, etc. The Background - Continued For small n, say n <= 3, you could obviously sit down with pencil and paper and discover a magic square in a fairly short amount of time. Take a few minutes now and do that, remembering that each of the numbers, 1 through n2, appear only once in the square. Now try it for n = 4 ... Oh, there has to be a better way. :) Of course, the computer doesn't have a patience problem. It can solve the problem for us by using the brute force method. This means that the computer will accomplish its task by trying every single possible arrangement of the numbers in a square and check each of the resulting squares to see if it's a magic square. [6, 2, 7, 5, 4, 8, 3, 9, 1] [4, 2, 7, 6, 5, 8, 3, 9, 1] [7, 4, 2, 6, 5, 8, 3, 9, 1] ... The Task Your assignment will be to determine all of the magic squares when given an n, display permutations that match the magic squares to the screen AND write it to a file. You will only test when n == 3!!! But code it for n of ANY number!! It turns out that finding the magic squares for n >= 4 takes too long for us to run it on the shared machines (linux1, 2 & 3) Since if n == 1, the square is 1 (too easy!!) and since for n == 2 there is no answer!! Your program must come up with every possible arrangement (permutation) of numbers within the square. These are known as the permutations of that list of numbers. Each permutation needs to be checked to see if it has formed a magic square. Program Requirements Your program must: use command line arguments. At the command line the user must enter (in this order): the name of the executable file, n (which will ALWAYS be 3, but again could be run with other numbers) and the name of the output file in which to write the squares. use a recursive permute to give all of the permutations of the square. In other words, your function called "permute", must be a recursive function. So for each permutation, you should check to see if it is a magic square, display it and write it to the file write only the unique magic squares to the SCREEN and FILE. No duplicates allowed. HINT: Let your program produce duplicates first, then see how you can refrain from writing the duplicates. Then modify your code. use a list of size n2. The code for the recursive permute function will be much easier to write if you store the numbers in a list rather than a two-dimensional list (or array) of size n x n. How you print the data is not related. [6, 2, 7, 5, 4, 8, 3, 9, 1, ....] (size to n2) [4, 2, 7, 6, 5, 8, 3, 9, 1, ....] [7, 4, 2, 6, 5, 8, 3, 9, 1, ....] ... close any files that you have opened as soon as you have finished using them. Time how long your program takes to find the magic square and print that time at the end of the SAME file. Sample Run Here is a sample of output of this program. Please note that the sample output only shows what is expected from your program if the user is actually entering everything as instructed. This is not a test of the program at all, but just a sample for your clarification. 2 7 6 9 5 1 4 3 8 2 9 4 7 5 3 6 1 8 4 3 8 9 5 1 2 7 6 4 9 2 3 5 7 8 1 6 6 1 8 7 5 3 2 9 4 6 7 2 1 5 9 8 3 4 8 1 6 3 5 7 4 9 2 8 3 4 1 5 9 6 7 2 Total running time: 4.76 seconds.

2977

why you are using benzoic acid for water content determination in TEA

2 7799

What is meaning of LOD and Water content ?

Alembic, Hetero, Lupin, Reddy Labs, Zeiss Pharmaceuticals,

3 22003

can i do m.tech after doing m.sc in bio-technology for better career.can u suggest in which subject of m.tech there is a better opportunity and good career.

Bharat Biotech, Medical,

2 7468

which part of spleen develops from endoderm?

DELL, e4e, eCare, Omega, Pacific,

2 10900

difference between instrumenent and equipment

6 13938

Appraise the significance of totipotency with respect to tissue culture technology.

University of Mauritius,

1 6144

How to conduct Literature Survey for Generics Development for European Market

2303

mixed 1.0 ml of methanol and 1.0 ml of toluene and injected in gas chromatography.will you prove that both solvents are in the ratio 1:1(not by area normalization)

1 3686

Which of the following is known as grave yard of rbcs?

SSC,

3 5400

What is the principle of GC/HPLC ?

BioCan, Biocon, Megafine Pharma,

4 57346


Un-Answered Questions { Sciences }

Can you explain the role of agricultural engineers in modern farming practices and the agricultural industry?

448


What is peripheral resistance?

829


Is a sewing needle magnetic or non magnetic?

1097


What is a graduated cylinder?

885


Define electro plating and electroless plating? : Electrochemistry Corrosion

1009


Can you explain the role of an ophthalmologist and the scope of their practice within the field of medicine?

1


What are the ten satellite launched from india and year of launch?

935


Explain the mechanism of antibacterial action?

2015


How to analyse antibacterial data ?

2037


An emission or bright line spectrum consists of?

110


What are the different principles involved in natural science?

1


Explain how does caffeine effect plant growth?

954


Can a tertiary consumer of one chain be a primary or secondary consumer of another chain?

238


Any one is alembic pharmaceutical ltd. On starting to job ?

1610


what is the purge flow & how to calculate

2563