Good Afternoon,
Can someone help me with this program which is an assignment for a class. I'm new to C++ its my fist course in computer science. The assignment details are:
1. The function removeAt of the class arrayListType removes an element from the list by shifting the elements of the list. However, if the element to be removed is at the beginning of the list and the list is fairly large it could take a lot of computer time. Because the list elements are in no particular order, you could simply remove the element by swapping the last element of the list with the item to be removed and reducing the length of the list. Rewrite the definition of the function removeAt using this techniue. Use the class unorderedArrayListType to test your function.
2. The function remove of the class arrayListType removes only the first occurence of an element. Add the function removeAll, as an abstract function, to the class arrayListType that would remove all occurence of a given element. Also, write the definition of the function removeAll, in the class unorderedArrayListType, and a program to test this function.
3. Add the function min, as an abstract function, to the class arrayListType to return the smallest element of the list. Also, write the definition of the function min, in the class unorderedArrayListType, and a program to test this function.
4. Add the function max, as an abstract function, to the class arrayListType to return the largest element of the list. Also, write the definition of the function max, in the class unorderedArrayListType, and a program to test this function.
arrayListType.h
#ifndef H_arrayListType
#define H_arrayListType
class arrayListType
{
public:
bool isEmpty() const;
//Function to determine whether the list is empty
//Postcondition: Returns true if the list is empty;
// otherwise, returns false.
bool isFull() const;
//Function to determine whether the list is full
//Postcondition: Returns true if the list is full;
// otherwise, returns false.
int listSize() const;
//Function to determine the number of elements in
//the list.
//Postcondition: Returns the value of length.
int maxListSize() const;
//Function to determine the maximum size of the list
//Postcondition: Returns the value of maxSize.
void print() const;
//Function to output the elements of the list
//Postcondition: Elements of the list are output on the
// standard output device.
bool isItemAtEqual(int location, int item) const;
//Function to determine whether item is the same as
//the item in the list at the position specified
//by location.
//Postcondition: Returns true if list[location]
// is the same as item; otherwise,
// returns false.
// If location is out of range, an
// appropriate message is displayed.
virtual void insertAt(int location, int insertItem) = 0;
//Function to insert insertItem in the list at the
//position specified by location.
//Note that this is an abstract function.
//Postcondition: Starting at location, the elements of
// the list are shifted down,
// list[location] = insertItem; length++;
// If the list is full or location is out of
// range, an appropriate message is displayed.
virtual void insertEnd(int insertItem) = 0;
//Function to insert insertItem an item at the end of
//the list. Note that this is an abstract function.
//Postcondition: list[length] = insertItem; and length++;
// If the list is full, an appropriate
// message is displayed.
void removeAt( int location);
//Function to remove the item from the list at the
//position specified by location
//Postcondition: The list element at list[location] is
// removed and length is decremented by 1.
// If location is out of range, an
// appropriate message is displayed.
void retrieveAt(int location, int& retItem) const;
//Function to retrieve the element from the list at the
//position specified by location
//Postcondition: retItem = list[location]
// If location is out of range, an
// appropriate message is displayed.
virtual void replaceAt(int location, int repItem) = 0;
//Function to replace the elements in the list
//at the position specified by location.
//Note that this is an abstract function.
//Postcondition: list[location] = repItem
// If location is out of range, an
// appropriate message is displayed.
void clearList();
//Function to remove all the elements from the list
//After this operation, the size of the list is zero.
//Postcondition: length = 0;
virtual int seqSearch(int searchItem) const = 0;
//Function to search the list for searchItem.
//Note that this is an abstract function.
//Postcondition: If the item is found, returns the
// location in the array where the item is
// found; otherwise, returns -1.
virtual void remove(int removeItem) = 0;
//Function to remove removeItem from the list.
//Note that this is an abstract function.
//Postcondition: If removeItem is found in the list,
// it is removed from the list and length
// is decremented by one.
void removeAll(const arrayListType& removeItem);
arrayListType(int size = 100);
//Constructor
//Creates an array of the size specified by the
//parameter size. The default array size is 100.
//Postcondition: The list points to the array, length = 0,
// and maxSize = size;
int min(int first, int last);
int max(int first, int last);
arrayListType (const arrayListType& otherList);
//Copy constructor
virtual ~arrayListType();
//Destructor
//Deallocate the memory occupied by the array.
protected:
int *list; //array to hold the list elements
int length; //variable to store the length of the list
int maxSize; //variable to store the maximum
//size of the list
};
#endifarrayListTypeImp.cpp
#include <iostream>
#include "arrayListType.h"
using namespace std;
bool arrayListType::isEmpty() const
{
return (length == 0);
} //end isEmpty
bool arrayListType::isFull() const
{
return (length == maxSize);
} //end isFull
int arrayListType::listSize() const
{
return length;
} //end listSize
int arrayListType::maxListSize() const
{
return maxSize;
} //end maxListSize
void arrayListType::print() const
{
for (int i = 0; i < length; i++)
cout << list[i] << " ";
cout << endl;
} //end print
bool arrayListType::isItemAtEqual(int location, int item) const
{
if (location < 0 || location >= length)
{
cout << "The location of the item to be removed "
<< "is out of range." << endl;
return false;
}
else
return (list[location] == item);
} //end isItemAtEqual
void arrayListType::removeAt(int location)
{
if (location < 0 || location >= length)
cout << "The location of the item to be removed "
<< "is out of range." << endl;
else
{
for (int i = location; i < length - 1; i++)
list[i] = list[i+1];
length--;
}
} //end removeAt
void arrayListType::removeAll( const arrayListType& removeItem)
{
int loc=seqSearch(removeItem);
for(int i=0; i < maxSize; i++)
{
remove(removeItem);
}
int arrayListType::min(int first, int last)
{
int minIndex;
minIndex = first;
for (int loc = first + 1; loc <= last; loc++)
if (list[loc] < list[minIndex])
minIndex = loc;
return minIndex;
}
int arrayListType::max(int first, int last)
{
int maxIndex;
maxIndex = first;
for (int loc = first + 1; loc <= last; loc++)
if (list[loc] < list[maxIndex])
maxIndex = loc;
return maxIndex;
}
void arrayListType::retrieveAt(int location, int& retItem) const
{
if (location < 0 || location >= length)
cout << "The location of the item to be retrieved is "
<< "out of range" << endl;
else
retItem = list[location];
} //end retrieveAt
void arrayListType::clearList()
{
length = 0;
} //end clearList
arrayListType::arrayListType(int size)
{
if (size <= 0)
{
cout << "The array size must be positive. Creating "
<< "an array of the size 100." << endl;
maxSize = 100;
}
else
maxSize = size;
length = 0;
list = new int[maxSize];
} //end constructor
arrayListType::~arrayListType()
{
delete [] list;
} //end destructor
arrayListType::arrayListType(const arrayListType& otherList)
{
maxSize = otherList.maxSize;
length = otherList.length;
list = new int[maxSize]; //create the array
for (int j = 0; j < length; j++) //copy otherList
list [j] = otherList.list[j];
}//end copy constructorunorderedArrayListType.h
#ifndef H_unorderedArrayListType
#define H_unorderedArrayListType
#include "arrayListType.h"
class unorderedArrayListType: public arrayListType
{
public:
void insertAt(int location, int insertItem);
void insertEnd(int insertItem);
void replaceAt(int location, int repItem);
int seqSearch(int searchItem) const;
void remove(int removeItem);
void removeAt( int location, const arrayListType& removeItem);
void removeAll(const arrayListType& removeItem);
int min(int first, int last);
int max(int first, int last);
unorderedArrayListType(int size = 100);
//Constructor
};
#endifunorderedArrayListTypeImp.cpp
#include <iostream>
#include "unorderedArrayListType.h"
using namespace std;
void unorderedArrayListType::insertAt(int location,
int insertItem)
{
if (location < 0 || location >= maxSize)
cout << "The position of the item to be inserted "
<< "is out of range." << endl;
else if (length >= maxSize) //list is full
cout << "Cannot insert in a full list" << endl;
else
{
for (int i = length; i > location; i--)
list[i] = list[i - 1]; //move the elements down
list[location] = insertItem; //insert the item at
//the specified position
length++; //increment the length
}
} //end insertAt
void unorderedArrayListType::insertEnd(int insertItem)
{
if (length >= maxSize) //the list is full
cout << "Cannot insert in a full list." << endl;
else
{
list[length] = insertItem; //insert the item at the end
length++; //increment the length
}
} //end insertEnd
int unorderedArrayListType::seqSearch(int searchItem) const
{
int loc;
bool found = false;
loc = 0;
while (loc < length && !found)
if (list[loc] == searchItem)
found = true;
else
loc++;
if (found)
return loc;
else
return -1;
} //end seqSearch
void unorderedArrayListType::remove(int removeItem)
{
int loc;
if (length == 0)
cout << "Cannot delete from an empty list." << endl;
else
{
loc = seqSearch(removeItem);
if (loc != -1)
removeAt(loc);
else
cout << "The item to be deleted is not in the list."
<< endl;
}
} //end remove
void unorderedArrayListType::replaceAt(int location, int repItem)
{
if (location < 0 || location >= length)
cout << "The location of the item to be "
<< "replaced is out of range." << endl;
else
list[location] = repItem;
} //end replaceAt
void arrayListType::removeAt(int location, const arrayListType& removeItem)
{
if (location < 0 || location >= length)
cout << "The location of the item to be removed "
<< "is out of range." << endl;
else
{
for (int i = location; i < length - 1; i++)
list[i] = list[i+1];
length--;
}
} //end removeAt
void arrayListType::removeAll( const arrayListType& removeItem)
{
int loc=seqSearch(removeItem);
for(int i=0; i < maxSize; i++)
{
remove(removeItem);
}
int arrayListType::min(int first, int last)
{
int minIndex;
minIndex = first;
for (int loc = first + 1; loc <= last; loc++)
if (list[loc] < list[minIndex])
minIndex = loc;
return minIndex;
}
int arrayListType::max(int first, int last)
{
int maxIndex;
maxIndex = first;
for (int loc = first + 1; loc <= last; loc++)
if (list[loc] < list[maxIndex])
maxIndex = loc;
return maxIndex;
}
unorderedArrayListType::unorderedArrayListType(int size)
: arrayListType(size)
{
} //end constructortestProgUnorderedList.cpp
#include <iostream>
#include "unorderedArrayListType.h"
using namespace std;
void unorderedArrayListType::insertAt(int location,
int insertItem)
{
if (location < 0 || location >= maxSize)
cout << "The position of the item to be inserted "
<< "is out of range." << endl;
else if (length >= maxSize) //list is full
cout << "Cannot insert in a full list" << endl;
else
{
for (int i = length; i > location; i--)
list[i] = list[i - 1]; //move the elements down
list[location] = insertItem; //insert the item at
//the specified position
length++; //increment the length
}
} //end insertAt
void unorderedArrayListType::insertEnd(int insertItem)
{
if (length >= maxSize) //the list is full
cout << "Cannot insert in a full list." << endl;
else
{
list[length] = insertItem; //insert the item at the end
length++; //increment the length
}
} //end insertEnd
int unorderedArrayListType::seqSearch(int searchItem) const
{
int loc;
bool found = false;
loc = 0;
while (loc < length && !found)
if (list[loc] == searchItem)
found = true;
else
loc++;
if (found)
return loc;
else
return -1;
} //end seqSearch
void unorderedArrayListType::remove(int removeItem)
{
int loc;
if (length == 0)
cout << "Cannot delete from an empty list." << endl;
else
{
loc = seqSearch(removeItem);
if (loc != -1)
removeAt(loc);
else
cout << "The item to be deleted is not in the list."
<< endl;
}
} //end remove
void unorderedArrayListType::replaceAt(int location, int repItem)
{
if (location < 0 || location >= length)
cout << "The location of the item to be "
<< "replaced is out of range." << endl;
else
list[location] = repItem;
} //end replaceAt
unorderedArrayListType::unorderedArrayListType(int size)
: arrayListType(size)
{
} //end constructorThanks in advance for the support and guidelines to make the program run
