pebble merchant, Computer Engineering

Assignment Help:

There is a pebble merchant.He sells the pebbles,that are used for shining the floor.His main duty is to take length of the room''s sides.

program 1 :
package test.padovanstring;

public class PadovanString {
    public int stringOccurrences(int n, String str){
  
    if(n >= 40)
    return -1;
    if(str.replaceAll("X|Y|Z","").length()>0)
    return -1;
    String res=pad(n);
    return(res.length() - res.replaceAll(str,"").length())/(str.length());
    }
public String pad(int n){
    if(n == 0) return "X";
    if(n == 1) return "Y";
    if(n == 2) return "Z";
    else return pad(n-2) + pad(n-3);
  
}
    public static void main(String []args)
    {
        PadovanString p = new PadovanString();
        System.out.println(p.stringOccurrences(21,"YZ"));
    }
}
 
 
 
Program set 2 :
import java.util.Scanner;
import java.util.ArrayList;
 
public class PadovanSeries
{
    public static void main(String[] arg)
    {
        Scanner read = new Scanner(System.in);
        System.out.println("Enter starting no. : ");
        int start = read.nextInt();
        System.out.println("Enter ending no. : ");
        int end = read.nextInt();
        int[] ans = getSeries(start, end);
        System.out.println("Padovan series : ");
        for (int a : ans)
            System.out.print(a + " ");
    }
 
    public static int[] getSeries(int s, int e)
    {
        ArrayList list = new ArrayList();
        int i, j = 0;
        for (i = s; i <= e; i++, j++)
            list.add(getPadovan(i));
        int[] ans = new int[j];
        for (i = 0; i < j; i++)
            ans[i] = list.get(i);
        return ans;
    }
 
    public static int getPadovan(int p)
    {
        if (p == 0 || p == 1 || p == 2)
            return 1;
        return (getPadovan(p - 2) + getPadovan(p - 3));
    }
}
 
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:

    Specify the work directory path in the 'Work Directory Path' field. The path should correspond to your solution project directory.
    Download the support files by clicking the Get Dev Files.
    You will find the following three folders:
        bin
        src
        lib
    in your work directory.
    Code the solution in  . java file inside the src folder
    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 public int stringOccurrences(int n, String str) in class PadovanString.
    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.
    String    str : str is a string represents sub string whose occurrence has to be found in the main string.

    You can create more methods but, do it in the same class.

Step 2:
In your solution keep in mind the following constraints:.

    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).
    Padovan formula is P(n) = P(n-2) + P(n-3) where n>2 and n is the integer.
    In the above Padovan formula + sign means string concatenation.
    For the Padovan formula value of P(0),P(1) and P(2) is given. You have to use those value only.
    n should not be greater than 40 otherwise return -1
    string str should be consist of only X,Y and Z in upper case otherwise return -1

The Prototype of the method is:
public int stringOccurrences(int n, String str).
This method 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 find in the main string.

    This method returns a number of occurrence of string str in the main string.

The constraints are:

    n should not be greater than 40 otherwise return -1
    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 :


Related Discussions:- pebble merchant

Learning abilities of perceptrons - ann, Learning Abilities of Perceptrons ...

Learning Abilities of Perceptrons - Artificial intelligence Computational learning theory is the study of what concepts specific learning schemes (representation and method) ca

What are the disadvantages of linux, What are the disadvantages of Linux? ...

What are the disadvantages of Linux? Learning Lack of comparable programs More technical skill required

Zero address instruction format, Zero address instruction format is used fo...

Zero address instruction format is used for  (A) RISC architecture.      (B) CISC architecture.  (C) Von-Neuman architecture.   (D) Stack-organized architecture.

Explain what are user controls, Briefly explain what user controls are and ...

Briefly explain what user controls are and what server controls are and the differences between the two.   An ASP.NET control (sometimes known as a server control) is a server-

Network properties, Network Properties There are many properties are as...

Network Properties There are many properties are associated with interconnection networks:- 1) Topology: It signify how the nodes a network are organised. A variety of top

How many tables can an append structure be assigned, To how many tables can...

To how many tables can an append structure be assigned. One table can be assigned to append structure.

Explain inheritance, Can you explain what inheritance is and an example of ...

Can you explain what inheritance is and an example of when you might use it? The process of deriving a new class from an existing class is known as Inheritance. The old class i

What is time multiplexed space switching, What is time multiplexed space sw...

What is time multiplexed space switching? Explain w ith a neat diagram. Time division switches, an inlet or an outlet corresponded to a particular subscriber line with one s

What are the features of ado.net, What are the features of ADO.Net ?  A...

What are the features of ADO.Net ?  ADO.NET features: 1. Disconnected Data Architecture 2. Data cached in Datasets 3. Data transfer in XML format 4. Interaction wit

Draw the logic circuit of a 3 line to 8 line decoder, What is a decoder? Dr...

What is a decoder? Draw the logic circuit of a 3 line to 8 line decoder and explain its working. Ans. Decoder: it is a combinational logic circuit which converts Binary words

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd