Help me write funcion deletenumber
I Tried but still not done !
hope you help me...Thanks you very much
Ex: 00042312 ->> delete the first zero 42312
0023014 ->> 23014
My code here
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#include "stdafx.h"
#include <stdio.h>
#include <iostream>
using namespace std;
class Node {
public:
int data;
Node* next;
};
class List {
private:
int count;
Node* pHead;
public:
List() ;
void addFirst(int) ;
void addLast(int);
void display();
int empty();
void removeFirst();
void clear();
int size();
List* deletethefirstzero(List*L); //HELP ME WRITE CODE HERE . THANKS YOU VERY MUCH
~List();
};
List::List() {
pHead = NULL;
count = 0;
}
void List::addFirst(int newdata) {
Node* pTemp = new Node;
pTemp->data = newdata;
pTemp->next = pHead;
pHead = pTemp;
count++;
}
void List::addLast(int newdata){
Node *pTail = pHead;
if(pHead == NULL){
addFirst(newdata);
}
else{
while(pTail->next != NULL){
pTail = pTail->next;
}
Node *pTemp = new Node();
pTemp->data = newdata;
pTemp->next = NULL;
pTail->next = pTemp;
// pTail = pTemp;
count ++;
}
}
void List::clear()
{
while (! empty()) removeFirst();
return;
}
List::~List() {
Node* pTemp = pHead;
while (pTemp!=NULL) {
pTemp = pTemp->next;
delete pHead;
pHead = pTemp;
}
}
void List::display() {
Node* pTemp = pHead;
while (pTemp!=NULL)
{
cout << pTemp->data<<", ";
pTemp = pTemp->next;
}
cout<<endl;
}
int List::empty()
{
return (pHead==NULL);
}
void List::removeFirst()
{
if (pHead!=NULL)
{
Node* pTemp = pHead;
pHead = pHead->next;
delete pTemp;
count --;
}
return;
}
int List::size()
{
return count;
}
List* deletethefirstzero(List*L){
//HELP ME WRITE CODE HERE . THANKS YOU VERY MUCH
}
int main()
{
List *aList = new List();
aList->addFirst(1);
aList->addFirst(2);
aList->addFirst(0);
aList->addFirst(4);
aList->addFirst(0);
aList->addFirst(0);
aList->addFirst(0);
aList->display();
return 0;
}
|
At first you declare function
deletethefirstzero as a member of List but you implement it as a global function.
Here's the code:
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class List
{
// ...
void deletethefirstzero();
// ...
};
// ...
void List::deletethefirstzero(){
if(pHead!=NULL)
{
while(pHead->data==0)
{
removeFirst();
}
}
}
|
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