Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Sort Routine Fails to Sort Final Sequence in Array

Posted on 2011-03-15
4
Medium Priority
?
356 Views
Last Modified: 2012-05-11
So far, so good... HOWEVER, I want this code to print the array in descending order, based on the second column... it does that, but leaves the last (highest) pair of numbers at the bottom of the list!  What can be done to fix this?
#include <iostream>
#include <stdlib.h>
#include <vector>
#include <algorithm>

using namespace std;
 
const int FINISH = 2;
const int START = 5;
 
void getData(int arr[][FINISH]);
void displayData(int arr[][FINISH]);
bool insertionSort(const vector<int>& inner1, const vector<int>& inner2); 

int i = 0;
int j = 0;
 
int main()
{
      int timeArray[START][FINISH];

      getData(timeArray);
      displayData(timeArray);

        vector<vector<int> > vect;

        for (int i = 0; i < START - 1; ++i) 
		{
                vector<int> inner(timeArray[i], timeArray[i] + 2);
                vect.push_back(inner);
        }
        
        sort(vect.begin(), vect.end(), insertionSort);

        for (int i = 0; i < START - 1; ++i) 
		{
                timeArray[i][0] = vect[i][0];
                timeArray[i][1] = vect[i][1];
        }

	  displayData(timeArray);
 
      cout << endl << endl << endl;

      system("PAUSE");
      return 0;
}

// used to prompt user to fill array with values
void getData(int arr[][FINISH])
{
      cout << "Enter start/finish times." << endl
        << "One at a time when prompted: " << endl;

         cout << endl;

   for(int i = 0; i <= START - 1; i++)
   {
	   cout << "Enter start time #" << i + 1 << ": ";
      cin >> arr[i][j];

	  for(int j = 0; j <= 0; j++)
		{
			cout << "Enter finish time #" << i + 1 << ": ";
		  cin >> arr[i][j + 1];
		}

      cout << endl;
   }
}// end getData()
 
// used to display array contents
void displayData(int arr[][FINISH])
{
	cout << endl << endl;
      for (int i = 0; i < START; i++)
      {
            for (int j = 0; j < FINISH; j++)
                  cout << arr[i][j] << " ";
            cout << endl;
      }
}// end displayData()
 
bool insertionSort(const vector<int>& inner1, const vector<int>& inner2) 
{
        return inner1[1] >= inner2[1];
}

Open in new window

I'm SO close...
0
Comment
Question by:Member_2_4213139
  • 2
4 Comments
 
LVL 53

Expert Comment

by:Infinity08
ID: 35141007
I notice that some of your loops go from 0 to (START - 1), and others go from 0 to (START - 2).
0
 
LVL 37

Accepted Solution

by:
TommySzalapski earned 2000 total points
ID: 35141035
I'm not too sure how you have this working, but shouldn't
for (int i = 0; i < START - 1; ++i)
be this?
for (int i = 0; i < START; ++i)

You are not copying the last item which is why it's still at the end.
You should notice it shows up twice.
0
 

Author Closing Comment

by:Member_2_4213139
ID: 35141204
I didn't notice ANY "START - 2" ... but changing the START -1 to START did it!  THANK YOU!
0
 
LVL 53

Expert Comment

by:Infinity08
ID: 35141230
>> I didn't notice ANY "START - 2"

If you have a loop condition that says :

        i < START - 1

it means it'll go up to (START - 2) and no further.
0

Featured Post

Concerto Cloud for Software Providers & ISVs

Can Concerto Cloud Services help you focus on evolving your application offerings, while delivering the best cloud experience to your customers? From DevOps to revenue models and customer support, the answer is yes!

Learn how Concerto can help you.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In this post we will learn how to make Android Gesture Tutorial and give different functionality whenever a user Touch or Scroll android screen.
This article will show how Aten was able to supply easy management and control for Artear's video walls and wide range display configurations of their newsroom.
The viewer will be introduced to the member functions push_back and pop_back of the vector class. The video will teach the difference between the two as well as how to use each one along with its functionality.
Loops Section Overview

824 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question