Go4Expert - About arrange in array

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About arrange in array

Hi everyone :), I'm training on C++ language and I have some troubles about array. My problem is arranging in array. Example, I have an float array, I wanna sort my negative numbers descending on the left, the zero (0) numbers in the middle and positive number ascending on the right in three ways: selection sort, insert sort and bubble sort. I hope you spare a little time to help me.

Code:

#include        <stdio.h>

#include        <conio.h>

#include        <iostream.h>



void input(int *a, int n)

{

        for(int i=0;i<n;i++)

        {        cout << "a[" << i << "]= ";

                cin >> a[i];

        }

}



void output(int *a,int n)

{

        for(int i=0;i<n;i++)

        {

                cout << a[i] << "\t";

        }

}



void swap(int &a,int &B)

{

        int tmp=a;

        a=b;

        b=tmp;

}



void main()

{

        clrscr();

        int n;

        int *a;

        cout << "Enter numbers of array: ";

        cin >> n;

        input(a,n);

        output(a,n);

        getch();

}

Thanks in advance and have a nice day.

Re: About arrange in array

Hi, welcome to the vast world of programming. Two of the most essential tools you need are Google and Wikipedia. Googling each type of sort - for me - returned a well written Wiki article as the top hit; here are the links:

http://en.wikipedia.org/wiki/Bubble_sort
http://en.wikipedia.org/wiki/Insertion_sort
http://en.wikipedia.org/wiki/Selection_sort

Also make sure you read IN FULL and act on this one:
http://www.catb.org/~esr/faqs/smart-questions.html
If you ask questions as outlined here you can be sure to get quality help.
This is a great article. I'm going to put it in my sig, if I can.