2d array to simulate linked list for stack construction
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  1. #1
    Join Date
    Feb 2013
    Posts
    1

    2d array to simulate linked list for stack construction

    I'm trying to implement 2d array to simulate linked list for stack and I faced several difficulties doing so.

    How do I implement from Top to Bottom ordering?
    How do I check random index value for validity?
    Source-code:

    Code:
    #include <iostream>
    using namespace std;
    
    int myTop, index, nex = -1;
    int twoDimentionalArray[25][3], L[25];
    
    void construction(int twodimention[25][3], int list[25])
    {
        myTop = -1;
        for(int p=0; p<25;p++)
            twoDimentionalArray[p][2] = -1;
    }
    
    void empty()
    {
        if (myTop == -1)
            cout << "The stack is empty.";
        else
            cout << "The stack is not empty.";
    }
    
    void push(int value)
    {
        if (myTop < 24)
        {   
            myTop++;
            L[myTop] = value;
            index = rand()%25;
            twoDimentionalArray[index][0] = index;
            twoDimentionalArray[index][1] = value;
            twoDimentionalArray[index][2] = nex;
            nex = index;
        }
        else
            cout << "The stack is full.";       
    }
    
    void top()
    {
        if (myTop != -1)
            cout << "The top of stack value is: " << L[myTop];
        else
            cout << "The stack is empty.";
        cout << endl;
    }
    
    void pop()
    {
        if (myTop != -1)
        {
            myTop --;
            twoDimentionalArray[index][2] = -1;
        }
    
    }
    
    void display()
    {
        for (int row=0; row<25; row++)
        {
            for (int column=0; column<3; column++)
            {
                cout << twoDimentionalArray[row][column] << "\t";
                if (column == 2)
                    cout << endl;
            }
        }
        cout << endl;
    }
    
    int main()
    {
        construction(twoDimentionalArray, L);
        for (int i=0; i < 11; i++)
            push(i);
        display();
    
        system ("pause");
    }
    Here's what I got from pushing 10 elements:

    0 3 9
    0 0 -1
    0 0 -1
    3 6 24
    0 0 -1
    5 10 14
    0 0 -1
    0 0 -1
    8 7 3
    9 2 17
    0 0 -1
    0 0 -1
    12 8 8
    0 0 -1
    14 9 12
    0 0 -1
    16 0 -1
    17 1 16
    0 0 -1
    19 4 0
    0 0 -1
    0 0 -1
    0 0 -1
    0 0 -1
    24 5 19


    And one more thing: how do I get straight 0 from 25 index in the first coulumn? Thanks!

  2. #2
    Join Date
    Dec 2012
    Location
    England
    Posts
    2,556

    Re: 2d array to simulate linked list for stack construction

    I'm trying to implement 2d array to simulate linked list for stack
    Why?? I don't understand what you are trying to achieve? Please can you provide more details of what you are trying to achieve and your implementation.

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