Structures and Algorithms in C++

[StephanDuke]

Can anyone help me…?
I am beginner in this….. for example this : “One function that builds full list of numbers, values read from the keypad “!

:)

[GWILouisaxwzkla]

could try:

<br /> /****************************************************************<br /> * File Name : cgt.cpp<br /> * Date : April,10,2007<br /> * Comments : new project<br /> * Compiler/Assembler : VC++ 6.0<br /> *<br /> *<br /> *<br /> *<br /> *<br /> * Program Shell Generated At: 2:59:58<br /> =-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/<br /> <br /> <br /> #include < iostream ><br /> //#include < string.h ><br /> //#include < conio.h ><br /> //#include < math.h ><br /> <br /> using namespace std;<br /> <br /> struct node<br /> {<br /> <br /> int data;<br /> node * next;<br /> node * back;<br /> <br /> };<br /> <br /> <br /> //@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ FUNCTION PROTOTYPES @@@@@@@@@@@@@@@@@@@@@@@@@@<br /> <br /> void readList ( node ** list );<br /> bool listsAreEqual ( node * left , node * right );<br /> node * copyList ( node * list );<br /> void printList ( node * list );<br /> void destroyList ( node ** list );<br /> bool listsContainEqualMembers ( node * left , node * right );<br /> <br /> //##################################################################################<br /> <br /> //main function ******************************<br /> <br /> int main ( )<br /> {<br /> <br /> node * head1 = 0;<br /> node * head2 = 0;<br /> <br /> cout << "enter first list :" << endl;<br /> readList ( &#038; head1 );<br /> cout << "enter second list: " << endl;<br /> readList ( &#038; head2 );<br /> <br /> if ( listsAreEqual ( head1 , head2 ) )<br /> cout << endl << "The lists are equal" << endl;<br /> else<br /> cout << endl << "The lists are not equal" << endl;<br /> <br /> cout << endl;<br /> if ( listsContainEqualMembers ( head1 , head2 ) )<br /> cout << endl << "lists contain equal members" << endl;<br /> else<br /> cout << endl << "lists do not contain equal members " << endl;<br /> <br /> <br /> node * copy = copyList ( head1 );<br /> cout << endl << "copy of first list is: ";<br /> printList ( copy );<br /> destroyList ( &#038; head1 );<br /> destroyList ( &#038; head2 );<br /> destroyList ( &#038; copy );<br /> return 0 ;<br /> }<br /> <br /> <br /> /******************************* FUNCTION DEFINITION ******************************<br /> <br /> Name : readList<br /> Parameters :<br /> <br /> <br /> <br /> Returns: Void type<br /> Comments:<br /> <br /> <br /> <br /> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/<br /> void readList ( node ** list )<br /> {<br /> <br /> cout << "enter an integer ( -1 to stop ) ";<br /> int i;<br /> cin >> i;<br /> node * temp = 0;<br /> <br /> while ( i != -1 )<br /> {<br /> <br /> temp = new node;<br /> if ( temp == 0 )<br /> {<br /> cout << " allocation error" ;<br /> ( * list ) = 0;<br /> return;<br /> }<br /> temp -> data = i ;<br /> if ( ( * list ) == 0 )<br /> {<br /> ( * list ) = temp;<br /> temp -> next = 0;<br /> temp -> back = temp;<br /> <br /> }<br /> else<br /> {<br /> ( * list ) -> back -> next = temp;<br /> temp -> next = temp -> back = 0;<br /> ( * list ) -> back = temp;<br /> }<br /> cout << "enter a number ( -1 to stop ) ";<br /> cin >> i;<br /> }<br /> <br /> return;<br /> }<br /> /******************************* FUNCTION DEFINITION ******************************<br /> <br /> Name : listsAreEqual<br /> Parameters :<br /> <br /> <br /> <br /> Returns: user defined type , bool<br /> <br /> Comments:<br /> <br /> <br /> <br /> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/<br /> bool listsAreEqual ( node * left , node * right )<br /> {<br /> <br /> bool matches = true;<br /> <br /> while ( left != 0 &#038;& right != 0 &#038;& matches )<br /> {<br /> <br /> if ( left -> data != right -> data )<br /> matches = false;<br /> else<br /> {<br /> left = left -> next;<br /> right = right -> next;<br /> }<br /> }<br /> if ( ! left &#038;& ! right &#038;& matches )<br /> return true;<br /> <br /> return false;<br /> }<br /> /******************************* FUNCTION DEFINITION ******************************<br /> <br /> Name : copyList<br /> Parameters :<br /> <br /> <br /> <br /> Returns: user defined type , node *<br /> <br /> Comments:<br /> <br /> <br /> <br /> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/<br /> node * copyList ( node * list )<br /> {<br /> <br /> node * temp = 0;<br /> node * newList = 0;<br /> <br /> while ( list )<br /> {<br /> <br /> temp = new node;<br /> if ( ! temp )<br /> {<br /> cout << "allocation error! ";<br /> return 0;<br /> }<br /> if ( newList == 0 )<br /> {<br /> newList = temp;<br /> temp -> data = list -> data;<br /> newList -> next = 0;<br /> newList -> back = temp;<br /> }<br /> else<br /> {<br /> temp -> data = list -> data;<br /> newList -> back -> next = temp;<br /> newList -> back = temp;<br /> temp -> next = temp -> next = 0;<br /> }<br /> list = list -> next;<br /> }<br /> return newList;<br /> }<br /> void printList ( node * temp )<br /> {<br /> <br /> <br /> cout << "list read is " ;<br /> while ( temp )<br /> {<br /> cout << temp -> data << " ";<br /> temp = temp -> next;<br /> }<br /> cout << endl;<br /> }<br /> /******************************* FUNCTION DEFINITION ******************************<br /> <br /> Name : destroyList<br /> Parameters :<br /> <br /> <br /> <br /> Returns: user defined type , void<br /> <br /> Comments:<br /> <br /> <br /> <br /> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/<br /> void destroyList ( node ** list )<br /> {<br /> <br /> <br /> node * temp = ( * list );<br /> node * temp2 = 0;<br /> while ( temp )<br /> {<br /> <br /> temp2 = temp;<br /> temp = temp -> next;<br /> delete temp2;<br /> }<br /> <br /> ( * list ) = 0;<br /> }<br /> /******************************* FUNCTION DEFINITION ******************************<br /> <br /> Name : listsContainEqualMembers<br /> Parameters :<br /> <br /> <br /> <br /> Returns: Void type<br /> Comments:<br /> <br /> <br /> <br /> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/<br /> bool listsContainEqualMembers ( node * left , node * right )<br /> {<br /> <br /> <br /> node * temp1 = left;<br /> node * temp2 = right;<br /> bool matches ;<br /> int length1 = 0 , length2 = 0;<br /> int numItems1 = 0 , numItems2 = 0;<br /> <br /> while ( temp1 &#038;& matches )<br /> {<br /> temp2 = right;<br /> matches = false;<br /> length1 ++; //get length of first list<br /> while ( temp2 &#038;& ! matches )<br /> {<br /> if ( temp1 -> data == temp2 -> data )<br /> matches = true;<br /> if ( ! matches )<br /> temp2 = temp2 -> next;<br /> }<br /> if ( matches )<br /> temp1 = temp1 -> next;<br /> }<br /> temp2 = right;<br /> while ( temp2 )<br /> {<br /> length2 ++ ;<br /> temp2 = temp2 -> next;<br /> }<br /> if ( length1 == length2 &#038;& matches )<br /> return true;<br /> return false;<br /> }<br /> <br />

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<br /> /****************************************************************<br /> * File Name : cgt.cpp<br /> * Date : April,10,2007<br /> * Comments : new project<br /> * Compiler/Assembler : VC++ 6.0<br /> *<br /> *<br /> *<br /> *<br /> *<br /> * Program Shell Generated At: 2:59:58<br /> =-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/<br /> <br /> <br /> #include < iostream ><br /> //#include < string.h ><br /> //#include < conio.h ><br /> //#include < math.h ><br /> <br /> using namespace std;<br /> <br /> struct node<br /> {<br /> <br /> int data;<br /> node * next;<br /> node * back;<br /> <br /> };<br /> <br /> <br /> //@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ FUNCTION PROTOTYPES @@@@@@@@@@@@@@@@@@@@@@@@@@<br /> <br /> void readList ( node ** list );<br /> bool listsAreEqual ( node * left , node * right );<br /> node * copyList ( node * list );<br /> void printList ( node * list );<br /> void destroyList ( node **  list );<br /> bool listsContainEqualMembers ( node * left , node * right );<br /> <br /> //##################################################################################<br /> <br /> //main function ******************************<br /> <br /> int main ( )<br /> {<br /> <br /> node * head1 = 0;<br /> node * head2 = 0;<br /> <br /> cout << "enter first list :" << endl;<br /> readList ( &#038; head1 );<br /> cout << "enter second list: " << endl;<br /> readList ( &#038; head2 );<br /> <br /> if ( listsAreEqual ( head1 , head2 ) )<br /> cout << endl << "The lists are equal" << endl;<br /> else<br /> cout << endl << "The lists are not equal" << endl;<br /> <br /> cout << endl;<br /> if ( listsContainEqualMembers ( head1 , head2 ) )<br /> cout << endl << "lists contain equal members" << endl;<br /> else<br /> cout << endl << "lists do not contain equal members " << endl;<br /> <br /> <br /> node * copy = copyList ( head1 );<br /> cout << endl << "copy of first list is: ";<br /> printList ( copy );<br /> destroyList ( &#038; head1 );<br /> destroyList ( &#038; head2 );<br /> destroyList ( &#038; copy );<br /> return 0 ;<br /> }<br /> <br /> <br /> /******************************* FUNCTION DEFINITION ******************************<br /> <br /> Name : readList<br /> Parameters :<br /> <br /> <br /> <br /> Returns: Void type<br /> Comments:<br /> <br /> <br /> <br /> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/<br /> void readList ( node ** list )<br /> {<br /> <br /> cout << "enter an integer ( -1 to stop ) ";<br /> int i;<br /> cin >> i;<br /> node * temp = 0;<br /> <br /> while (  i != -1 )<br /> {<br /> <br /> temp = new node;<br /> if ( temp == 0 )<br /> {<br /> cout << " allocation error" ;<br /> ( * list ) = 0;<br /> return;<br /> }<br /> temp -> data = i ;<br /> if ( ( * list ) == 0 )<br /> {<br /> ( * list ) = temp;<br /> temp -> next = 0;<br /> temp -> back = temp;<br /> <br /> }<br /> else<br /> {<br /> ( * list ) -> back -> next = temp;<br /> temp -> next = temp -> back = 0;<br /> ( * list ) -> back = temp;<br /> }<br /> cout << "enter a number ( -1 to stop ) ";<br /> cin >> i;<br /> }<br /> <br /> return;<br /> }<br /> /******************************* FUNCTION DEFINITION ******************************<br /> <br /> Name : listsAreEqual<br /> Parameters :<br /> <br /> <br /> <br /> Returns: user defined type , bool<br /> <br /> Comments:<br /> <br /> <br /> <br /> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/<br /> bool listsAreEqual ( node * left , node * right )<br /> {<br /> <br /> bool matches = true;<br /> <br /> while ( left != 0  &#038;& right != 0 &#038;& matches )<br /> {<br /> <br /> if ( left -> data != right -> data )<br /> matches = false;<br /> else<br /> {<br /> left = left -> next;<br /> right = right -> next;<br /> }<br /> }<br /> if ( ! left &#038;& ! right &#038;& matches )<br /> return true;<br /> <br /> return false;<br /> }<br /> /******************************* FUNCTION DEFINITION ******************************<br /> <br /> Name : copyList<br /> Parameters :<br /> <br /> <br /> <br /> Returns: user defined type , node *<br /> <br /> Comments:<br /> <br /> <br /> <br /> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/<br /> node * copyList ( node * list )<br /> {<br /> <br /> node * temp = 0;<br /> node * newList = 0;<br /> <br /> while ( list )<br /> {<br /> <br /> temp = new node;<br /> if ( ! temp )<br /> {<br /> cout << "allocation error! ";<br /> return 0;<br /> }<br /> if ( newList == 0 )<br /> {<br /> newList = temp;<br /> temp -> data = list -> data;<br /> newList -> next = 0;<br /> newList -> back = temp;<br /> }<br /> else<br /> {<br /> temp -> data = list -> data;<br /> newList -> back -> next = temp;<br /> newList -> back = temp;<br /> temp -> next = temp -> next = 0;<br /> }<br /> list = list -> next;<br /> }<br /> return newList;<br /> }<br /> void printList ( node * temp )<br /> {<br /> <br /> <br /> cout << "list read is " ;<br /> while ( temp )<br /> {<br /> cout << temp -> data << " ";<br /> temp = temp -> next;<br /> }<br /> cout << endl;<br /> }<br /> /******************************* FUNCTION DEFINITION ******************************<br /> <br /> Name : destroyList<br /> Parameters :<br /> <br /> <br /> <br /> Returns: user defined type , void<br /> <br /> Comments:<br /> <br /> <br /> <br /> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/<br /> void destroyList ( node ** list )<br /> {<br /> <br /> <br /> node * temp = ( * list );<br /> node * temp2 = 0;<br /> while ( temp )<br /> {<br /> <br /> temp2 = temp;<br /> temp = temp -> next;<br /> delete temp2;<br /> }<br /> <br /> ( * list ) = 0;<br /> }<br /> /******************************* FUNCTION DEFINITION ******************************<br /> <br /> Name : listsContainEqualMembers<br /> Parameters :<br /> <br /> <br /> <br /> Returns: Void type<br /> Comments:<br /> <br /> <br /> <br /> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/<br /> bool listsContainEqualMembers ( node * left , node * right )<br /> {<br /> <br /> <br /> node * temp1 = left;<br /> node * temp2 = right;<br /> bool matches ;<br /> int length1 = 0 , length2 = 0;<br /> int numItems1 = 0 , numItems2 = 0;<br /> <br /> while ( temp1 &#038;& matches )<br /> {<br /> temp2 = right;<br /> matches = false;<br /> length1 ++; //get length of first list<br /> while ( temp2 &#038;& ! matches )<br /> {<br /> if ( temp1 -> data == temp2 -> data )<br /> matches = true;<br /> if ( ! matches )<br /> temp2 = temp2 -> next;<br /> }<br /> if ( matches )<br /> temp1 = temp1 -> next;<br /> }<br /> temp2 = right;<br /> while ( temp2 )<br /> {<br /> length2 ++ ;<br /> temp2 = temp2 -> next;<br /> }<br /> if ( length1 == length2 &#038;& matches )<br /> return true;<br /> return false;<br /> }<br /> <br />

[StephanDuke]

Thank you so much but,I’m sorry…bcz i said that i am Beginner can u write a smaller code and to explain me these code…..if it’s not a big problem for you…or some tutorial for Structures and Algorithms in C++ for Beginners…..? Thanks!

Hacking is not a CRIME….???!!!

[GWILouisaxwzkla]

Heres a simple version ( the items are entered into the list from the back )

<br /> /****************************************************************<br /> * File Name : c:programstempCG.cpp<br /> * Date : January,8,2010<br /> * Comments : new project<br /> * Compiler/Assembler : Visual C++ 6.0<br /> * Modifications :<br /> *<br /> *<br /> *<br /> *<br /> *<br /> * Program Shell Generated At: 4:13:24 p.m.<br /> =-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/<br /> <br /> <br /> #include < iostream ><br /> //#include < string.h ><br /> //#include < conio.h ><br /> //#include < math.h ><br /> //#include < iomanip ><br /> //#include < ctype.h ><br /> <br /> using namespace std;<br /> <br /> //node for the list<br /> struct node<br /> {<br /> int data;<br /> node * next;<br /> };<br /> <br /> <br /> <br /> //main function ******************************<br /> <br /> int main ( )<br /> {<br /> <br /> cout << "enter numbers ( 0 to stop ) " << endl << endl;<br /> <br /> node * front = NULL; //front of the linked list<br /> node * temp = NULL;<br /> node * back = NULL;<br /> <br /> int input;<br /> <br /> cout << "enter number: ";<br /> cin >> input;<br /> <br /> //######### READ THE LIST FROM THE KEYBOARD<br /> <br /> while ( input != 0 )<br /> {<br /> temp = new node; //make a new node in the list<br /> if ( temp == NULL ) //check that node was allocated properly<br /> {<br /> cout << "allocation error , node not stored! " << endl;<br /> continue;<br /> }<br /> temp -> data = input;//copy data<br /> temp -> next = NULL; //new item has no next item<br /> if ( front == NULL ) //if the list is empty add a new node<br /> {<br /> front = temp; //front of list points to temp<br /> back = temp; //back of list pointer points to temp<br /> }<br /> else //add the item to the back of the list<br /> {<br /> back -> next = temp;//next item in the list is the item read<br /> back = temp; //new item is the new last item<br /> }<br /> cout << "enter number: "; //get the next number<br /> cin >> input;<br /> }<br /> <br /> <br /> cout << "Printed list: " << endl << endl;<br /> <br /> temp = front; //start at the front of the list<br /> <br /> //############ PRINT THE LIST<br /> <br /> while ( temp ) //while not at the end of the list<br /> {<br /> cout << temp -> data << " " ; //output data in list item<br /> temp = temp -> next; //go to next item in the list<br /> }<br /> <br /> //######## DELETE THE LIST<br /> <br /> while ( front )<br /> {<br /> temp = front; //save the address of the front node<br /> front = front -> next; //make the next item first<br /> delete temp; //deallocate memory for the old front node<br /> }<br /> <br /> <br /> return 0 ;<br /> }<br /> <br /> <br /> <br /> <br />

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<br /> /****************************************************************<br /> * File Name : c:programstempCG.cpp<br /> * Date : January,8,2010<br /> * Comments : new project<br /> * Compiler/Assembler : Visual C++ 6.0<br /> * Modifications :<br /> *<br /> *<br /> *<br /> *<br /> *<br /> * Program Shell Generated At: 4:13:24 p.m.<br /> =-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/<br /> <br /> <br /> #include < iostream ><br /> //#include < string.h ><br /> //#include < conio.h ><br /> //#include < math.h ><br /> //#include < iomanip ><br /> //#include < ctype.h ><br /> <br /> using namespace std;<br /> <br /> //node for the list<br /> struct node<br /> {<br /> int data;<br /> node * next;<br /> };<br /> <br /> <br /> <br /> //main function ******************************<br /> <br /> int main ( )<br /> {<br /> <br /> cout << "enter numbers ( 0 to stop ) " << endl << endl;<br /> <br /> node * front = NULL; //front of the linked list<br /> node * temp = NULL;<br /> node * back = NULL;<br /> <br /> int input;<br /> <br /> cout << "enter number: ";<br /> cin >> input;<br /> <br /> //######### READ THE LIST FROM THE KEYBOARD<br /> <br /> while ( input != 0 )<br /> {<br /> temp = new node; //make a new node in the list<br /> if ( temp == NULL ) //check that node was allocated properly<br /> {<br /> cout << "allocation error , node not stored! " << endl;<br /> continue;<br /> }<br /> temp -> data = input;//copy data<br /> temp -> next = NULL; //new item has no next item<br /> if ( front == NULL ) //if the list is empty add a  new node<br /> {<br /> front = temp; //front of list points to temp<br /> back = temp; //back of list pointer points to temp<br /> }<br /> else //add the item to the back of the list<br /> {<br /> back -> next = temp;//next item in the list is the item read<br /> back = temp; //new item is the new last item<br /> }<br /> cout << "enter number: "; //get the next number<br /> cin >> input;<br /> }<br /> <br /> <br /> cout << "Printed list: " << endl << endl;<br /> <br /> temp = front; //start at the front of the list<br /> <br /> //############ PRINT THE LIST<br /> <br /> while ( temp ) //while not at the end of the list<br /> {<br /> cout << temp -> data << " " ; //output data in list item<br /> temp = temp -> next; //go to next item in the list<br /> }<br /> <br /> //######## DELETE THE LIST<br /> <br /> while ( front )<br /> {<br /> temp = front; //save the address of the front node<br /> front = front -> next; //make the next item first<br /> delete temp; //deallocate memory for the old front node<br /> }<br /> <br /> <br /> return 0 ;<br /> }<br /> <br /> <br /> <br /> <br />

[StephanDuke]

I had in exam in Structures and Algorithms in C++ for this code to wrote but i don’t know how to wrote in C++…..Pls anyone to help me :

1) Are given a days courses, a currency exchange in the penny, the course (i) = 1,2,3, … 365 for 2007. The average month found that there were higher average savings. .

Anyone for help…?

Maybe have some gramatically mistakes….sorry…bcz i don’t know so English Gramar

[GWILouisaxwzkla]

Not sure what your doing. Does this relate to linked lists?

[GrantFinej]

Hello,

Since you are a beginner, so you better study the following site. which will help you understand this more better.
https://www.mycplus.com/tag/data-structure/

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