please help to solve a c program, C/C++ Programming

Padovan String
Problem Description

A Padovan string P(n) for a natural number n is defined as:

P(0) = ‘X’

P(1) = ‘Y’

P(2) = ‘Z’

P(n) = P(n-2) + P(n-3), n>2
where + denotes string concatenation.
For a string of the characters ‘X’ , ‘Y’ and ‘Z’ only, and given value of n, write a program that counts the number of occurrences of the string in the n-th Padovan string P(n).


An example is given below.

For n = 6 and the string ZY, the program should count the occurrences of ZY in P(6).

P(0) = ‘X’

P(1) = ‘Y’

P(2) = ‘Z’

P(n) = P(n-2) + P(n-3), n>2


P(3) = P(1)+P(0)

P(3) = YX


P(4) = P(2)+P(1)

P(4) = ZY


P(5) = P(3)+P(2)

P(5) = YXZ


P(6) = P(4)+P(3)

P(6) = ZYYX

So, the number of occurrences of the string ZY in P(6) is 1.
Instruction to work with Open PBT Client:
1. Specify the work directory path in the ''Work directory Path'' field. The path should correspond to your solution Work directory.
2. Download the support files by clicking the Get Dev Files.
3. You will find the problem directories containing:
o problem.h file
o problem.c file
in your project directory.
4. Code the solution in .c file inside the problem directory
5. All required files will be downloaded to your work directory. Creating additional files is strongly discouraged.
Step 1:
In your Solution File:
• Implement your logic in function int stringOccurrences(int n, char* str)
• int n :n is an integer represents n(th) for which full main string has to formed, from which occurrence of string str has to be found.
• char* str :str is a string represents sub string whose occurrence has to be found in the main string.
• You can create more functions if required, but those functions should be in the same file.

Step 2:
In your solution keep in mind the following constraints:.
1. In this problem you have to write a program that counts the number of occurrences of the string in the n-th Padovan string P(n).
2. Padovan formula is P(n) = P(n-2) + P(n-3) where n>2 and n is the integer.
3. In the above Padovan formula + sign means string concatenation.
4. For the Padovan formula value of P(0),P(1) and P(2) is given. You have to use those value only.
5. n should not be greater than 40 otherwise return -1
6. string str should be consist of only X,Y and Z in upper case otherwise return -1
The Prototype of the function is
int stringOccurrences(int n, char* str)
This function takes following arguments.
• n is the value for which full main string has to formed, from which occurrence of string str has to be found.
• str represents sub string whose occurrence has to be found in the main string.
• This function returns a number of occurrence of string str in the main string.
The constraints are:
1. n should not be greater than 40 otherwise return -1
2. string str should be consist of only X,Y and Z in upper case otherwise return -1
Example 1
Input
________________________________________
int n = 6
string str = ZY
Output
________________________________________
1
Explanation : This question is explained in problem description.
Example 2
Input
________________________________________
int n = 6
String str = ZYmm
Output
________________________________________
-1
Explanation :
String str is containing character other than X, Z and Y.
Example 3
Input
________________________________________
int n = 8
String str = XZ
Output
________________________________________
1
For C solutions
Header File : padovanstring.h
Function Name : int stringOccurrences(int n, char* str)
File Name : padovanstring.c
For C++ solutions
Header File : padovanstring.h
Class Name : PadovanString
Function Name : int stringOccurrences(int n, char* str)
File Name : padovanstring.c
General Instructions
* The file / class names, functions, method signatures, header files are to be used as mentioned in the problem statement. Do not use your own names or change the method signatures and fields. You can add any number of additional methods.
* For C solutions, change the value of "C_OR_CPP" macro in header file as 1 and for C++ solutions change the value as 2.
* In case of iostream.h specify as iostream only.
* Command line options for the main() function are not supported currently.

Posted Date: 9/2/2012 3:18:03 PM | Location : United States







Related Discussions:- please help to solve a c program, Assignment Help, Ask Question on please help to solve a c program, Get Answer, Expert's Help, please help to solve a c program Discussions

Write discussion on please help to solve a c program
Your posts are moderated
Related Questions
How many levels deep can include files be nested? - As such, there is no limit to number of levels of nested include files you can have however your compiler might run out of s

Problem: (a) What is the main advantage to using a data file? (b) What is meant by opening a data file? How is this accomplished? Illustrate your answer clearly with a sui

how do i print out invalid input?

Explain the Declaration of Multi Dimensional Arrays? In the figure, the range in the first dimension is 3 and in the second dimension is 4. The shaded portion corresponds to th

Manipulators There are several classes in the iostream.h header file. One of them is ios class. This class stores the format state. For example, some bits explain the base in w

A body which has three forces acting on it is in equilibrium. One force is 3N to the North and the other is 4N to the west. What us the magnitude and direction of the third force?

Illustration of Grid function: For illustration, the script below creates two individual figure windows. At First, it clears the figure window. Then, it generates an x vector


n this problem u given a board in which some of the elements are placed as shown in diagram below .each element represent a color .fill the other elements in the board such that no

a program that declares and prompts the user to enter two integer and performs the five arithmetic operations