C/C++ :: Array To Sort Strings In Alphabetic Order And Read From Stdin
Mar 20, 2014
I have a pre-declared array which sorts strings to it's alphabetic order and want to change it so it reads from stdin.
char *array[] = {"aaa", "ccc", "bbb", "ddd"}
I tried doing something like this:
for (i = 0; i < length; i++)
scanf("%s", &array[i]);
I just can't bring it to work. Another thing is, the input is a a bunch of strings separated by commas and ends with a period. Since I have to make a working C model which gets translated to assembly language later on I can't use functions like strtok.
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Jan 14, 2014
i need one more option which it can display all the items i have entered in alphabetic order in my program..this is my coding......
#include<stdio.h>
#include<string.h>
#include<ctype.h>
#define capacity 1000
void cal_item(struct item[capacity]);
void input(struct item[capacity]);
}
[code]....
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Jan 25, 2014
So I need to read in a .txt file and sort it by SSN in ascending order. How to start this but here's what I have so far:
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
struct Information {
char name[25];
long SSN;
[Code] .....
Also here is the contents of the .txt file:
Matthews,Jocob
459237148
19
3930 4th Blvd, Yourcity, NJ 88710
......
and so on.
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Sep 25, 2014
So I try to sort an array with qsort and then save the new order, so this means if I have a list like:
4 3 7 2
[0] [1] [2] [3],
after sorting it becomes:
2 3 4 7
[3] [1] [0] [2] <== this is what I want to have!
Code:
void qsort_my(int *a, int l, int r, int *array_order) {
int j;
if( l < r ) {
j = split( a, l, r, array_order);
qsort_my( a, l, j-1, array_order);
qsort_my( a, j+1, r, array_order);
[Code]...
But my problem is that the list gets sorted, but the indexes do strange stuff. When I run with this list:
4 8 14 1 2 1 22 12 2 14
Pos: 0 1 2 3 4 5 6 7 8 9
I get:
1 1 2 2 4 8 12 14 14 22
Pos: 1 0 1 0 0 5 7 6 5 6
And with some printfs I noticed, the first two calls of split it is fine but then strange things start to happen, what I do wrong?
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Oct 29, 2014
I am trying to write a program which will sort an array of numbers into ascending order, here is my code
#include<iostream>
#include<cmath>
using namespace std;
int main(){
int array[]={1, 5, 17, 3, 75, 4, 4, 23, 5, 12, 34, 34, 805, 345, 435, 234, 6, 47, 4, 9, 0, 56, 32, 78};
[Code] .....
This compiles fine but when I run the .exe for the first time an error message comes up saying program has stopped working. If I run the program again without recompiling it seems to work as expected.
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Oct 17, 2014
I have to write a function called sortMe that sorts the elements of an array in numerical order from highest to lowest values (descending order) or vice versa (ascending order).
The assignment asks to: NOT re-arrange elements in the array; instead, it uses a second array, an array of indexes for the elements in the original array and then sortMe 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.
Header of the function sortMe must be as shown below:
void sortMe(int array[],int sortedIndexes [], 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.
Declare and initialize the array array.
Declare the array sortedIndexes but do not initialize it. You are going to play with the array sortedIndexes in the function sortMe.
EXAMPLE:
int array[5]={3, 5,-1,10,0};
int sortedIndexes[5];
sortMe(array,sortedIndexes, 5, 'a');
After the function call, the elements of the array sortedIndexes should be: 2,4,0,1,3.
notice that the function does not e-arrange the elements in the array.
Code:
#include <iostream>
using namespace std;
void sortMe(int[], int, char);
void main() {
int arr[6] = { 14, -5, 5, 0, 22, -99 };
[code]...
how to use the other array.
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Apr 9, 2015
I am trying to sort an array of strings but when I pass it through my bubbleSort function, it gives me a segmentation fault. By print checking, I know that there are strings in the array "f" but it doesn't get sorted.
Note: The file I am putting into this program is a text file with 1000 lines
# include <stdio.h>
# include <stdlib.h>
# include <string.h>
[Code].....
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Oct 10, 2014
I want to read a string of unknown length from stdin. I tried to follow the approach from this link. URL....My code is like this:
#include <iostream>
#include <string>
using namespace std;
int n;
cin >> n;
cout << "The value of n is " << n << endl;
}
[code]......
What I have noticed is that if I take integer input from cin (cin >> n;) in the above code before getline, the control does not stop on getline to take str as input from the console. If I don't do (cin >> n) before getline then the control stops on getline and takes the string as input.What is the best way to read from console multiple strings of unknown length in combination with the integers?
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Feb 12, 2013
I am suppose to make a program that reads in data from a text file (integers only) and sorts them as it inserts them into an array of size 10. I did this using an insertion sort, which worked great. But now I am being told that I need the function has to read ALL of the numbers in the text file, not just the first 10, and I am not allowed to store them THEN sort, it has to be sorted as being stored.
This is what I have for sorting first 10
void sortArray(int iArray[])
{
string fileName = "";
fstream inFile;
int tmp = 0;
[Code]....
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Mar 3, 2013
In a program, I have a text file (called MyDictionary.txt) which has thousands of words in alphabetical order. I need to make a C program that reads in this text file and then makes an array called char Words[# of total words in the text file][length of longest word].
Aarhus
Aaron
Ababa
aback
abaft
abandon
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Apr 6, 2014
My C programming class wants us to write a program to read integers into an array, sort the numbers and print out the occurrence of each number. I've tried everything that I can think of but the core dump is still occurring.
void countValues ( FILE *inf, int list[], int size ); /* Function prototypes. */
void printFrequencies( const int list[], int size );
int main (void) {
int status = EXIT_SUCCESS; /* defaulting status to success. */
FILE *inf = fopen( "numbers.txt", "r" ); /* input data file */
[Code] .....
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Mar 1, 2014
I am having problems figuring out how to place a list of strings from a text file into a multidimensional array that is something like words[NUM_WORDS][MAX_LEN]. I already run through the file once and count the number of words in it. I have tried a number of loops using fscanf and fgets, but I'm not sure if I am using them right -- this is my first time using them. The text file is a list of words in a dictionary, so the wordCount is about 45340.
Here is my code:
#include <stdio.h>
#include <string.h>
#define MAX_LEN 46
int main(){
int wordCount = 0;
FILE *inputFile, *outputFile;
[Code] ....
Like I said, the wordCount portion works. I added the printf statements at the end to see if anything was being saved, but it just prints two new blank lines. New to file reading and writing.
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Mar 10, 2015
i have a list
ID | Location | Quantity
1 | 2 | 5
2 | 3 | 10
3 | 4 | 8
i want the order to be in ascending order by Quantity so it should produce this
ID | Location | Quantity
1 | 2 | 5
3 | 4 | 8
2 | 3 | 10
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Sep 29, 2013
Trying to sort matrix such that it has value in ascending order.
But outcome is coming :
Code:
Matrix after sorting :
2,2,2,2,
2,2,2,2,
2,2,2,2,
2,2,2,2,
Can't find whats wrong.
[Code]....
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Feb 19, 2014
Write a program that orders three double numbers by increasing value. The program should include a function named sort3 that takes three double * arguments (pointer to double). The function prototype is void sort3(double *x, double *y, double *z); The function should reorder the values pointed to by its arguments so that after the call sort3(&x, &y, &z); the numbers satisfy . Your program should input data and print results using the following format:
Enter three numbers: 4.7 1.4 3.2
The ordered sequence is: 1.4 3.2 4.7
And here is my program: C code - 32 lines - codepad
I am getting a lot of errors when I run it through GCC. I can only use pointers.
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Jan 22, 2014
so my program reads a file type which looks like this...
Michelle 71
Marcie 99
David 42
Rebecca 83
Jonathan 79
Matthew 77
Rose 7
Melanie 75
Kimberly 73
Roger 74
Scott 76
Bradley 77
Drextell 10
Heidi 70
Alan 68
Pearl 13
Jeanne 43
Heber 55
Here is whats in the header of the class
class StudentStat {
private:
int Size;
[Code].....
So as of right now the names are stored in a Names string array and the scores are saved in a Score int array. So my question is where do I begin with my bubble sort? I need it to put the scores in descending order so from greatest score to lowest but I need the Names in the string array to still be connected to the number from the list. Never done a bubble sort before so not sure where to begin.
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Nov 10, 2013
I have to optimize a code for below scenario. I am reading stdin (a file redirected to stdin) character by character. How many chars are going to come is not known. After every few chars there is a seaparator. e.g $ as below
rhhrkkj$hghjhdf$ddfkrjt
While reading, if the separator arrives I'm processing the string stored before that separator and then continue reading stdin in same fashion, till EOF. I am using getc(stdin) to read chars.
Using gprof I can see most of the program time is spent inside main() , for this reading logic. Rest of the program is just some insert and search operations. I am getting time of 0.01 secs at the moment, want to reduce further.
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Jun 20, 2014
I am having trouble sorting out a list of names in c. I have code for sorting the names, but when I go to print them out they still are in the same order as they were at the beginning so something isnt right. So the function that I need is the sort_data function.
Code:
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#define MAX_STRING_LEN 25
void insert_data(char **strings, const char* filename, int size);
void allocate(char ***strings, int size);
[Code] ....
The list that I am reading in is as follows:
matt
susan
mark
david
aden
phil
erik
john
caden
mycah
So I need to get this list in alphabetical order, but when I run my code and print out this list after I run the sort function, they are still in this order.
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Feb 1, 2014
I'm stuck again on a homework problem. I enter 9 8 7 6 5 4 3 2 1 in to the program when it asks me to. I print out the array (just before the bubble sort routine) and I get the numbers in descending order just as expected. So going into bubble sort routine, the numbers are correct.
I should get 1 2 3 4 5 6 7 8 9 as output.
But I get 1 2 3 4 4 5 6 7 8
Code:
#include <stdio.h>
#include <stdlib.h>
int main() {
int max_size = 20; // max size of array of numbers
int numbers[max_size]; // array for numbers
[Code] .....
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Jul 27, 2014
I am pretty much new in C++ programming and i have to do stack exercises. Writing a simple code of sorting the elements in ascending order in a stack.
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Feb 17, 2013
Question: What is the efficiency and big O of the selection sort algorithm when the input happens to already be in nondecreasing order?
Answer: Not sure... since the input is in nondecreasing order, such that example 0, 1, 1, 2, 3, 4, 4, 5 then there will be no swap, Just comparisons of emelemts. So it is big O of n
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Apr 18, 2013
At the line number 65 that's my sort method first i sum up all the value in the nodes after that i want to sort the Nodes In ascending order but the method is not working ...
#include <iostream>
#include <conio.h>
using namespace std;
// Node Class
[Code] ....
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Oct 2, 2013
A link list problem, i need some how to sort and print out an object by surname in alphabetical order.
i have a try to do that by this code not working for swamping i should i go about that?
May another way of swapping using pointer instead?
void functions::printdata() {
for(node* temp1=head;temp1!=NULL;temp1=temp1->next) {
for(node* temp2=head;temp2!=NULL;temp2=temp2->next) {
[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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Jan 24, 2014
I'm trying to write a program to sort 2 ints on ascending/descending order, using function pointers. here is my code so far:
Code:
#include <stdio.h>
#include <stdlib.h>
int min_el(int a,int b);
[code]....
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Jan 8, 2013
Assignment:
1. Choose what to enter NUMBER or LETTER.
2. Choose type of sorting ASCENDING or DESCENDING.
#include<iostream.h>
#include<conio.h>
main() {
int x,y,z;
cout<<"choose Number or letter
1.number
2.Letter";
[Code] ....
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