C++ :: Sorting Values In Array?

Feb 8, 2015

I tried sorting arr2 from lowest to highest value, but it only gives me 4 values and then the rest are zero.

Code:
#include <iostream>
#include <iomanip>
using namespace std;
int main()
{
cout << fixed << setprecision(1);

[code].....

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C++ :: Sorting Elements Of Array In Order From Highest To Lowest Values

Jul 6, 2013

I am writing a function called swap that sorts the elements of an array in order from highest to lowest values where they descend and ascend. A particular thing about this function is that swap does NOT re-arrange elements in the array so it just uses a second array of indexes for the elements in the original array and then swap sorts the second array based on the values in the original array. A sorted version of the original array can then be produced with these sorted indexes. You can declare and initialize the original array without any user input.

For example, int arr[10] = {1, 5, 22, 14, 6, -5, 7, 9, 12, 15 };

Header of the function swap must be as shown below: void swap(int array[],int swapedIndexes [], int size, char mode) When mode is 'a', the function sorts the array in the ascending order, and when mode is 'd', the function sorts it in the descending order. int swappedIndexes[5];swap(array,swappedInde… 5, 'a');

So far I have this code that randomly generates arrays of 10 elements and I found the max and min, but I am confused on what to do about the swapping part? Also, how to make the numbers ascend or descend in numerical order?? Here is what i have done so far:

#include<ctime>
#include <iostream>
using namespace std;
int min(int [],int);
void max(int [],int , int &);
void main()
{ srand(time(0));
//1-declare

[Code] .....

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C/C++ :: Sorting A File Based On ASCII Values?

Sep 1, 2014

New file_sorter.c:

#include <stdio.h>
#include <stdlib.h>
#include "sort.h"
#include <string.h>

[Code].....

My issue is now a segmentation fault in my sorting algorithm. In my assignment I was suppose to implement quick and insertion sort for the file, and organised strictly by ASCII values. We were allowed to look up generic algorithms for the sorts, but we have to convert them to comparing char arrays.

I haven't started trying to configure quick sort yet, but I'll supply the generic algorithm as well. keep in mind that the first line in the file contains the number of lines in the file. I'll try not to disappear this time!

sort.c :
#include <stdio.h>
#include <stddef.h>
#include <stdlib.h>

[Code]....

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C++ :: Sorting Some Data Based On Values Of A String Of Bits

Apr 1, 2014

I have a problem I am working on where I need to sort some data based on the values of a string of bits. The strings look like this,

010000001110000000

there are 18 bits, 1 means a feature is present, 0 means the feature is absent.

Each of these string has 4 on bits. I need to sort them such that I have the longest possible runs with 3 of the same on bits. It doesn't matter which 3 bits are on, I am just looking to order them in blocks with the longest possible runs. As a second step, the ordered blocks will be sorted by size large>small.

The following data is ordered like I need it to be.

Code:
// block 1, run of 12, keys 1,2,11 are identical (key 12 is also identical)
011000000001100000
011000000001100000
011000000001100000
011000000001100000

[Code] .....

This is the sort order that I am looking for. I need to be able to take a list of the bit strings in any particular order and sort them into the order above. The algorithm would need to recognize that there are 4 on keys and then look for groupings of three common on keys.

This is more of an algorithm question than one about specific implementation in code. I generally assume that most programming problems have been solved one way or another, so I don't know much about analyzing and manipulating strings of bits.

Is there a standard method for this kind of pattern recognition?

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C/C++ :: Compare Values Stored In First Array To User Inputted Values In Second Array

Oct 19, 2014

Goal: Write a program that compares the values stored in the first array to the user inputted values in the second array.

In order to fix this error: [URL]...

I had to change my array initialization to one with a star in front of it:

char a1[]={"a","d","b","b","c","b","a","b","c","d","a","c","d","b","d","c","c","a","d","b"};
to:
char *a1[]={"a","d","b","b","c","b","a","b","c","d","a","c","d","b","d","c","c","a","d","b"};

I also changed my 2nd array to one with a star in front of it: char *a2[20];

What does this mean exactly? Putting a star in front of an array?

Also, I am now getting an "unhandled exception" when I try to get input for my 2nd array:

cin>>a2[i];

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C++ :: Hash Table Program - Sorting Pointer Table After All Of Values Entered

Nov 19, 2013

I am having an issue with my sort function. This is one part of the Hash table program. The main issue is that I am trying to sort the pointer table after all of the values have been entered. The ptr_sort function is not a class function and so I am therefore unable to use the class variables psize and pTable. Is there another way I should be trying this? it is a Vector should I use the sort() function from the vector class in STL?

#include "/home/onyuksel/courses/340/progs/13f/p9/util9.h"
#include "/home/onyuksel/courses/340/progs/13f/p9/hTable.h"

#ifndef H_TABLE1
#define H_TABLE1
void ptr_sort ( );

[Code] ....

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C :: Sorting Array Of Integers Between Two Positions Of Array

Apr 18, 2013

I am trying to create a code to sort an array of integer, but only between two positions of the array, not the all array.

like this:

array: 1 2 5 4 7 2 9 8
index: 0 1 2 3 4 5 6 7

i want to sort the array per exemple between the the index 2 and 5.the result is... array: 1 2 2 4 5 7 9 8

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C :: Selection Sorting A 2D Array

Feb 13, 2013

Selection sorting a 2D array . Let's say i have an array like

1 2 3 4 //4 elements
1 2 // 2 elements
1 2 3 4 5 //5 elements
1 2 3 //3 elements
1 //1 element

And I want to do a selection sort it in descending order which the row with 5 elements will come first then 4 then 3 and so on. So that it would look like this

1 2 3 4 5
1 2 3 4
1 2 3
1 2
1

Code:
void selectionSortDescending(int list[MAX_ROW], int size){
int temp;
int walk;
int curr;
int large; // index of the largest element

for (walk = 0; walk < size - 1; walk++)

[Code] ....

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C :: Sorting Array Of Size 10

Nov 18, 2013

I am trying to sort an array of size 10. If I was given:

Code: int List[Size] = {29, 11,12,10,3,26,13,15,19,2};

I need the program to sort all the odd integers and put the even integers to the back of the array. Like so:

Index: 0 1 2 3 4 5 6 7 8 9
Value:29 11 3 13 15 19 12 10 26 2

And it returns the number of even integers in the List. In this case it returns 4. All I am given to start with is

Code:
int evensToRead(int* const List, const int Size){
//body
}

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C :: Sorting 2D Array By Column

Oct 24, 2013

i have a matrix containing a lot of points and each point has its coordinates x and y. That is a nx2 size array. I want to sort it according to the first column ascending, with x coordinates. For points that have the same x coord i would like to sort according to y coord. Here is what i did and i cannot get a good result.

Code:

#include <stdio.h>
#include <stdlib.h>
int main(){
int a[5][2] = {{1,0}, {4,2}, {2,4}, {8,6},{4,8}};
int temp=0;
int i=0;
int j=0;

[Code]...

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C++ :: Sorting A Structure Array

Jan 22, 2013

i need to print the names as they appear in the original file, print the info of the person with the highest distance, print the info sorted by ascending ID number, and print sorted by name alphabetically. the first two parts work fine but sorting by ID and Name dont work.

#include <iostream>
#include <fstream>
#include <stdlib.h>
#include <string.h>
#include <math.h>

[code]....

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C++ :: 2D Array - Sorting Diagonally

Jan 3, 2014

I have a question about sorting a 2D array. Lets suppose I've got the following array:

2 5 7 4 8

3 11 14 5 2

6 3 12 9 1

7 15 11 4 2

8 16 13 5 1

I would like to sort this array diagonally to make it look as : [URL] ....

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C# :: Sorting 2 Dimensional Array By Value

Jan 9, 2014

Here is what I have, I have a 1D Array being added to a 2D Array and I need to Sort them by value value 3 in the 2D Array, while maintaining a specific amount. Here is what I have so far:

public static void CheckHS(string[] HS) {
try {
GeneralData.HighScores[10, 0] = "11";
GeneralData.HighScores[10, 1] = HS[1];
GeneralData.HighScores[10, 2] = HS[2];
GeneralData.HighScores[10, 3] = HS[3];
//Need Sort Data - Bubble Sort?
}//end Try
catch (Exception ex) { MessageBox.Show(ex.Message); }
}

I am thinking bubble sorting but I remember reading about something faster. Unfortunately I can't find it on the web. The idea is that there will be always 10 Values and 4 Columns on the 2D Array. [The 11th Row being empty at the end of it.

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C/C++ :: Sorting 2D Array Diagonally?

Jan 3, 2014

How to sort a 2D array diagonally? Lets suppose I've got the following array:

2  5  7  4 8
3  11 14 5 2
6  3  12 9 1
7  15 11 4 2
8  16 13 5 1 

I want to create a function that sort them diagonally like this: [URL] .....

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C :: Sorting Elements In 2D Array By Their Index

Jun 17, 2013

I need to sort the elements in a 2d array by their index (starting from 1) for example:

Code:
1 5 3
4 7 8
4 10 2

10 is the biggest element and its index is 32, after 10 comes 8 with index 23 etc etc...

Looking for examples for two orders ... By descending and ascending order...

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C++ :: Linked List Or Sorting An Array?

Feb 2, 2015

I have an algorithm and I want to make it as efficient as possible. Basically it just involves putting numbers in order. I have two options, but which one would be more efficient:

1. Using a doubly linked list. Every time a user wants to add a new number, the algorithm will start searching the correct place for the number from the beginning of the list. This is efficient per se, but once there are about a million numbers and a number has to be put in at the end of the list, the algorithm must go through all the 999 999 numbers before it.

2. Using a container to store all the numbers first, then sorting the numbers. In this case, adding all the numbers is fast, but the actual sorting will take a long time.

Which option would be more efficient? I was thinking of using maybe merge sort or quick sort in option 2. Yes, I'm aware I could just use vector and sort, but that's not my goal here.

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C++ :: Sorting String Array Alphabetically

Nov 7, 2014

I wish to sort a string array alphabetically and im not sure if i am doing it right. for example:

string a[5]; //initial array
string b[5]; //sorted array
int index = 0; //index of b array

for (int i = 0; i < 5; i++){
for (int j = 0; j < 5; j++){
int c = 0;

[Code] ....

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C++ :: Sorting Array Of N Given Elements Using Recursion?

Dec 29, 2013

I need to sort an array of n given elements using recursion. What am i doing wrong here?

#include <iostream>
using namespace std;
int i=0, j=1, v[100], n;

[Code].....

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C++ :: Sorting Numerical Array Error

Nov 25, 2013

Why this wont run? I'm getting the cant convert int* to const char error but i do not know why?

I'm trying to create a program that creates an array of 100 ints between 0 and 250 and then sorts them using a separate function, I've gotten this far

#include <iostream>
#include <stdlib.h>
#include <time.h>
#include <stdio.h>
#include <cstring>

using namespace std;
void quicksort (int *items, int len);

[Code] ....

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C++ :: Sorting Array In Ascending Order

Jan 4, 2014

This code prints 10 20 40 50 30.

#include “stdafx.h”
#include
#include
using namespace std;

int main() {
int anarray[5] = {40,10,50,30,20};
for (int iii=0 ; iii <= 4 ; iii++)

[Code] .....

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C++ :: Sorting Array By Using Linked List

Apr 3, 2014

I have two arrays of characters that I want to combine and sort according to an internal variable (init) using a forward-iterating linked list. The two arrays must stay separated, as one of the arrays (the enemies) is contained within the object (encounter), the other is passed in via pointers (the players). The array inside the object will be destroyed later (when the encounter is over and the enemies are hopefully dead) while the one that is passed in must survive to be passed into other objects at a later time (the next encounter). My thought is to sort each array by linked list separately first, then iterate through and combine the two lists, But how to do this and no support IRL.

// DECLARATION OF CLASSES //
class character{
public:
character(); // Constructor

[Code]....

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C++ :: Sorting Array Of Mixed Float?

Oct 25, 2014

I should sort an array of mixed float and integer numbers by merge method, and using the pointers to sort that mix array. how to use pointers to sort those different type of data.

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C++ :: Sorting A User Input For Array?

Mar 26, 2014

Were supposed to be able to sort an array which is user input, but the first number they input is supposed to be the length of the array, and everything after that is the actual array.

Here is my code:

#include <iostream>
#include <iomanip>
using namespace std;
int main() {
int size;
int list[80];
bool isSorted (const int list[], int size);

[code]....

I'm stuck on how I'm supposed to use the first digit of input for the array size.

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C++ :: Bubble Sorting A Classed Array

May 8, 2014

I'm really struggling with bubble sorting a classed array(an inventory). I understand bubble sorting in theory and implementing it into a static array makes sense. When I get to doing it in a classed array then I struggle. I need to sort the weight by bubble sort (then selection sort for name, and insertion sort the cost; but I want to tackle one problem at a time.

Here is the code:

#include <iostream>
#include <iomanip>
#include <conio.h>
#include "Inventory.h"
#define MAX_REC 10
using namespace std;
//Class to hold inventory variables/funcitons

[Code] ......

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C++ :: Sorting (array Based) Database?

Mar 26, 2013

knows if there is a ready made function in C++ to sort (numerically or alphabetically) multiple arrays based on a particular array?

i.e. Imagine you have multiple arrays or a multi-dimentional array containing data about users (name, age, etc.)

Is there a function that for example can sort it by name, and automatically shift the age so they still correspond to the correct user name?

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C++ ::  Sorting Array To Numerical Order?

Nov 25, 2014

I need to find the Mean, median, mode, and make a histogram of a 99 value array. How ever my sorting function is not sorting the array at all how can I fix this.

#include <iostream>
#include <fstream>
#include <cstdlib>
#include <math.h>
#include <cctype>

[Code].....

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