C++ :: Sorting Strings / Arrays In A User Defined Lexical Order?
May 7, 2013
I previously tried to put strings in an array, but i couldn't modify the first index in the string that is in the array. I changed my code later.
[URL]
Suggest a function that sorts the inputs vertically according to the order given by the user? I made this one
void order(string order, char index[][15]){
int counter=0,line=0,i=0,j=0;
for(i=0;i<=15-1;i++)
{for(j=0;j<=15-1;j++) {
if(index[j][i]==order[counter])
[code].....
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Jan 30, 2013
I want to implement a function into the code below that sorts the user defined amount of random numbers and then sorts them in ascending order.
#include <iostream>
#include <ctime>
#include <cstdlib>
#include <iomanip>
#include <string>
using namespace std;
class IntegerArray {
[Code] ....
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Feb 25, 2014
I am writing some code to bubble sort a list of randoms numbers, 10 at the moment. I want to be able to user input the amount of elements that would be sorted. I think i'd have to use vector instead of arrays, but unsure how to do this. Or, how to be able to change the size of the array.
#include <iostream>
using namespace std;
#define SIZE 10
float numbers[SIZE];
int move_n;
[Code] ....
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May 28, 2014
// OK this program outputs an array of numbers which are read from two .txt //files which are set1 and set2.
// set1.txt has: 8 37 29 31 40 25 18 38 4 45 34 39 12 21 24 3 5 23 26 44
// set2.txt has: 46 42 25 20 19 29 49 4 32 2 10 12 39 17 33 6 3 15 45 21
// But the problem is that when you run the program, the numbers do not come out // in numerical order.
#include <iostream>
#include <fstream>
#include <string>
[Code]....
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Nov 7, 2013
How do i sort records by user specified field in ascending order, without knowing how many columns the file has? its getting the data from a file.
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Jan 30, 2013
I have a code right here that i worked on with my teacher. I can say that he did most of the work. Basically i'm sorting elements in a dictionary order.
Code:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define MAXWORD 50 // max word size
void swap(char **p, char **q) // Q1: Why do I need a double pointer?
[Code] ....
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Nov 15, 2013
This program I am trying to write has a structure of persons with a first name last name and age for each.
What I need it to do it display the order of the persons before sorting and then display the persons after sorting by age.
So far I have written the overall program but am stuck at the most important step...which is defining the functions that will be doing all of the work.
For sort_by_age I want use bubble sorting by writing the function myself and for print_person_info I am confused on how to print data out of the struct.
Code:
#include <stdio.h>
struct person
{
char first_name[20];
char last_name[20];
int age;
};
void print_person_info(struct person clone);
void sort_by_age(int n, struct person a[]);
[Code]...
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Feb 17, 2015
I want to sort a vector int in ascending order, but when I test, the output isn't correct - the vector is still unsorted. Am I calling it incorrectly?
int sorted (vector <int> a) {
int size = a.size();
sort(a.begin(), a.end());
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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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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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Dec 30, 2013
so i have two classes ( main and another one ask ) in main i have defined 3 arrays (char drivers[250] ,offences[250] , owners[250]) and also included their pointers ( char *drivers_ptr,*offences_ptr,8owners_ptr)my problem is that i need to set values (actually 1 string of 250 chars to each of these arrays BUT from the class ask without making these arrays global -as this is prohibited by my university exercise !- )
so my question is how will i manage to save data to the arrays that i have defined in main using their addresses(through the pointers of each one that i have passed to the ask class) from the ask class ?
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Jul 2, 2014
make my program sort data.in this case number that i declared as char(not string, my bada)if i have
name1
number 2500
email
name 2
number 2400
email
i need to put that this way:
name 2
number 2400
email
name1
number 2500
email
i saw that can be done with qsort but when i try it it doesn't work.
Code:
typedef struct {
char nome[MAX_GERAL], email[MAX_GERAL], morada[MAX_GERAL], postal[MAX_GERAL], numero[MAX_GERAL], geral[MAX_GERAL];
int telefone, FP, SD, AM1, ALGA, CM;
}dados;
code to add info i need to sort "numero"
Code:
void adicionar(dados* contacto){
if (i<total) {
printf("
Introduza o Nome: ", i + 1);
scanf(" %[^
[code]....
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Sep 7, 2014
What kind of code should i use for sorting numbers in both ascending and descending order? I don't know how to use bubble sorting either, is there another easy way to sort this out?
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Apr 14, 2014
I am trying to read information in from a file, each line of which contains a name in the form 'last, first middle'. I can successfully open the file and read it into an array that is roughly 2500 string in size. The problem comes when I try to sort the array into alphabetical order. I am using a sorting algorithm that we were instructed to use, found in our book. It is shown in the code. I would add the file that needs to be opened, but it is a few thousand lines long.
The error I am getting is:
Unhandled exception at 0x00A28628 in PeopleSearch.exe: 0xC0000005: Access violation reading location 0x00CC400C.
and I know it has to do with the sorting algorithm from using break points and running the program with that section commented out. I am stumped to why it is giving this error, as it seems that it is trying to access the array outside of the bounds of the array, but it shouldn't be
Here is my code:
#include<iostream>
#include<string>
#include<fstream>
using namespace std;
int main() {
string NameArray[2500], filename; //declare array and file to open
[Code] ....
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Nov 18, 2014
I'd like to modify this code so that there is 1000 numbers instead of 100, and that they're sorted in ascending order instead of descending order.
#include <iostream>
#include <cstdlib>
#include <ctime>
using namespace std;
double* sort_array(double* sort) {
for (int a=1; a<100; a++) {
[code]....
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Jul 20, 2014
Here is my code below:
#include<fstream>
#include<iostream>
#include<stdlib.h>
#include<iomanip>
#include<string>
using namespace std;
void main() {
fstream file;
string id,name,type,price;
[code].....
I can't separate and align 4 categories neatly, how to do this solution below(the link of example for sorting Product ID in ascending order): [URL]
By the way,here is the required .txt file(test.txt): [URL]
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Oct 26, 2013
I know there is a function in algorithm class called sort() but I need to sort ignoring the case of the alphabet
Is there any function that does that?
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Jul 15, 2013
I have two vectors of float that I need to sort in reverse order. reverse() seems to work for one of them, but not the other. I have toggled between sort() and reverse(). for one vector, the expected behavior is seen and the order reverses. For the other, there is no change in order.
This is very simple code, so it's hard to imagine what is going wrong.
Code:
vector<float> vec1, vec2;
vec1[0] = 14.1102; vec1[1] = 14.1145;
vec2[0] = 15.8508; vec2[1] = 26.0842;
sort( vec1.begin(), vec1.end() );
sort( vec2.begin(), vec2.end() );
[Code] ......
Printout is,
Code:
vector 1 sort
14.1102
14.1145
vector 2 sort
15.8508
26.0842
vector 1 reverse
14.1102
14.1145
vector 2 reverse
26.0842
15.8508
You can see that the order of the first vector did not change. Am I right in suspecting that the numbers are too similar for what ever method reverse() uses to determine the difference between values?
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Feb 13, 2013
I have a vector which contains vectors containing 7 integers each. I'd like to sort these vectors based on the value of the first integer (int IOT), in ascending order. I know this type of question can be found everywhere, but I'm lost as to why this doesn't compile.
#include <fstream>
#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <stdio.h>
#include <math.h>
#include <windows.h>
using namespace std;
class orders {
public:
int IOT; // Incoming Order Time
[Code] ....
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May 2, 2014
The assignment is to read in a text file of passenger names (first and last initial), seats (A1, B1, C1, D1, A2, etc.), and ticket prices. The output is specified to be a table of passengers and their seats sorted by seat order, and I also have to print the minimum and maximum ticket prices along with the owner of each ticket, along with the average of all ticket prices. My arrays are all reading in correctly, and the minimum, maximum, and average ticket prices were all easy to find. My problem is the sorting.
We were introduced to arrays a couple weeks ago and this is our first time doing any sorting. We are supposed to use a bubble sort, and while I think I gather how to use a bubble sort, it's not working in my program (so obviously I don't really know how to use it). I have tried several different things, and sometimes a few seats/names will switch around (never the way I want them to) and sometimes nothing will happen at all.
New to programming, not trying to get homework done for me, need to bubble sort airplane passengers and seats by seat order (A1, B1, C1, D1, A2, etc).
My input looks like this:
A Z A1 555.55
repeat with different initials, seats, and prices however many times the user sees fit.
I have a 1D character array for the columns(A - D), a 1D integer array for rows (1 to maximum integer), 1D float array for prices, and 2D array for name initals.
Here's the function to read in the arrays:
void read_Arrays(char seat_cols[], int seat_rows[], char name[][LAST], float price[]) {
int i, j;
for(i = 0; i < FIRST; i++) {
for(j = 0; j < LAST; j++) {
scanf(" %c", &name[i][j]);
} scanf(" %c %d %f ", &seat_cols[i], &seat_rows[i], &price[i]);
}
}
Here's the sort. The way we were shown to do it was with a 'for' loop nested within a 'do while':
{
do {
flag = 0;
for(i=0; i < ROWSIZE-1; i++) {
if(seat_rows[i] > seat_rows[i + 1]) {
[code]....
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Oct 14, 2013
How would you compare two strings in an if statement to determine which comes first in alphabetical order?
Try and keep it simple because i am currently new to the language
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Oct 24, 2013
I am having problems sorting data... I don't know to to go about it here is my code:
<code>
#include <iostream>
#include <string>
using namespace std;
int main () {
int i;
struct person
[Code] ....
i want to sort it out so that it can output names and ages in ascending order.
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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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Jul 23, 2014
The instructions call for the user to define the size of the array and all I have ever done is use a predefined size for the array and then let the user fill it. Here is what I have so far:
Code:
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
void Display (void);
void random (int *, int);
void Ascending (int *, int);
void Descending (int *, int);
[code]....
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Mar 4, 2014
#include<iostream>
using namespace std;
#include<set>
class person{
int age;
[Code] ....
When I executed the above code it displays
Age is 37
Age is 25
Here I have defined operator< so that set can identify the order of person objects. I am clueless how set could identify that
person p[3]={person(25),person(37),person(25)};
I have provided one duplicated object with age 25
I havent overloaded == operator also,then how it could identify?
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Feb 25, 2015
what is a built in function and user defined is cause i cant seriously find a decent example about it in the net
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