C++ :: Find Median Of Array?

Jul 4, 2013

I am trying to find the median of an array in c++.

This is the array that I would like to find the median for.

scores[14] = {62,70,98,71,81,99,74,80,73,88,73,72,95,71};

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C/C++ :: Find Minimum - Getting Median And Mode In Array

Feb 7, 2015

So I am trying to find the min, max, range, mean, median, and mode. The max number is right but the min isnt. Once that is corrected, i can get range and mean easily. Also, how to get mode and median. I am guessing the values in the arr2 would have to be sorted. This refers to the values in arr2 which are the calculated values in the formula. You can enter -2 and 2 for userMin and userMax.

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

[Code] .....

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C/C++ :: Find Median Of Array Of 5 Values - No Instance Of Overloaded Function

Mar 12, 2014

I am so close to finishing this program. It will find the median of an array of 5 values. I have one last error that I cannot seem to get to go away. Here's the code:

#include <algorithm>
#include <functional>
#include <array>
#include <iostream>
using namespace std;
int main() {
int integer1, integer2, integer3, integer4, integer5;

[Code] .....

The error states: "IntelliSense: no instance of overloaded function "std::nth_element" matches the argument list, argument types are: (std::_Array_iterator, std::_Array_iterator, unsigned int, std::_Array_iterator)

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C/C++ :: Two Dimensional Array Median Filtering?

Nov 12, 2014

I'm trying to write code that implements [median filtering] on a two-dimensional array.

Here's an image to illustrate:

The program starts at the beginning of the array. The maximum array size is 100. I know that I can use an array like:

int a[100][100];

to store the input, and that I can iterate over a part of this array using two `for` loops like this:

for(i=0;i<size_filter;i++)
for(j=0;j<size_filter;j++)
temp[i][j]=a[i][j] // not so sure

But how can I make this code loop over the neighbors of every element in the array, calculate their median, and replace the center element with the median?

For some examples of what I'm trying to do, let's say that the input is a 5x5 matrix, so the input size is 5. And I want to run a 3x3 median filter on it, i.e. each element should be replaced by the median of the 3x3 elements surrounding it.

The program starts at the corner index (0,0). For this index, it scans the 3x3 region surrounding it (of which only four indexes actually lie within the input array), which contains the values 0, 0, 1, and 0. The median of these values is 0, so that's what the code should output for this array index.

In the picture below, the number in -band - is the center cell, and the plain * and * numbers are its neighbors within the 3x3 region surrounding it:

-0- *0* 0 0 0
*1* *0* 0 1 0
1 1 0 0 0
0 1 1 0 0
0 0 0 0 0

Here's another example, this time with the center index (0,1):

*0* -0- *0* 0 0
*1* *0* *0* 1 0
1 1 0 0 0
0 1 1 0 0
0 0 0 0 0

This time, the elements in the 3x3 region (excluding those outside the input array) have the values 0, 0, 0, 1, 0, and 0, and again, their median is therefore 0.

Here's yet another example, this time from the middle of the input, at center index (3,2):

0 0 0 0 0
*1* *0* *0* 1 0
*1* -1- *0* 0 0
*0* *1* *1* 0 0
0 0 0 0 0

This time, the elements within the 3x3 region have the values 1, 0, 0, 1, 1, 0, 0, 1, and 1, and their median in therefore 1.

Final example:

<size of array><size filter> <data>
8
3
0 0 0 0 0 0 0 0
0 5 0 0 6 0 0 0
0 0 0 0 0 7 0 0
0 0 0 0 5 0 0 0
0 0 0 5 6 0 0 0
0 0 8 5 5 0 0 0
0 0 0 7 0 0 9 0
0 0 0 0 0 0 0 0

Output:

0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 5 5 0 0 0
0 0 0 5 5 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0

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C++ :: Calculate Mode / Mean And Median Of Array Of Integers

Mar 17, 2013

I'm writing a program that calculates the mode, mean and median of an array of integers. I've done the mean and median but i can't figure out mode.

I have to find the number of modes.

Ex array of integers: 10, 10, 4, 5, 6,5, 6, 7

My function has to return the number 3. Because there are 3 sets of mode; 10,5,6.

How do i implement this in my function because for now it just calculates the mode. It only return the number mode 10.

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C++ :: Create Program That Displays Median Of Array Using Pointers

Feb 27, 2013

The assignment is to create a program that displays the median of an array using pointers. Assume the array is already in ascending or descending order.I'm getting errors currently on the bottom two "return median;" statements.The code that I have so far is as follows...

#include <iostream>
using namespace std;
char again;
int getMedian(int*, int);
const int constant = 100;

[code]....

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C++ :: Store User Input In Array And Calculate Mean / Median And Mode - Bubble Sorting

Mar 26, 2014

I'm trying to make a c++ program of this but i don't know how to use the bubble sorting.

Write a C++ application that asks the user to enter 10 numbers. The program then stores those numbers in an Array. The program should display the Mean , Median, and Mode.

Mean is the average of the 10 numbers.
Median is the average of the 5th and the 6th numbers. (But you have to arrange the numbers in ascending order first using Bubble Sort before calculating the Median.)
Mode is the most frequent number among the 10 numbers.

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C++ :: Passing 2 Dimensional Array Through Median Function To One Of 2 Other Function

Aug 20, 2013

I want to use one median function "selectfunction" to choose one of the 2 other functions at random to pass my 2-dim array to the selected function. There is a problem in the median function

#include <iostream>
#define random(x)(rand()%x) // for random number between numbers of 0 and 1
using namespace std;
void proc1 (int iArray[][2]);
void proc2 (int iArray[][2]);
void selectfunction(int iArray[][2]);
int A[4][2] = {{1, 2} , {3, 4} , { 5, 7} , {8, 1} };

[Code]...

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C++ :: Average And Median Of Arrays

Apr 12, 2013

I need to calculate the average and median of an array. I do not know how to put it in code.

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C++ :: Pointers (Average And Median)

Apr 29, 2014

Write a program that can be used to gather statistical data about the number of movies college students see in a month. The program should ask the user how many students were surveyed and dynamically allocate an array of that size. The program should then allow the user to enter the number of movies each student has seen. The program should then calculate the average, and median of the values entered.

My problem is that i keep getting a error box that says:
Run-Time Check Failure #2 - Stack around the variable 'sNUM' was corrupted.
and then my program shuts down!

This is what i have so far

Code:
#include <iostream>
#include <iomanip>
using namespace std;
void movAVG(int *, int);
void movMED(int *, int);
int main() {
int sNUM,
sARRAY,
*sARRAYptr;

[Code] ....

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C++ :: Compute Mean / Median / Mode For Map Construct

May 28, 2013

I am writing code, which reads an input file (280 MB) containing a list of words. I would like to compute

1) total # of words
2) total # of unique/distinct words
3) mean/median/mode of word count (Link)

I managed to get done with 1) and 2), but my program crashes for 3). I am not quite sure whether there are memory issues or some bug in the code.

Code:
#include <iostream>
#include <fstream>
#include <string>
#include <map>
using namespace std;

[Code] .....

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C++ :: How To Make Median Display As Double

Feb 8, 2015

How do i make the median display as a double?

#include <iostream>
#include <conio.h>
#include <cstdlib>
#include <ctime>
using namespace std;
int main {
int* randomArray(int, int); /*This function creates an array of random numbers
of a given size within a given range*/

[Code]...

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C++ :: Sorting And Calculating Median Of A Vector?

Dec 1, 2014

I am trying to to pull data from a file into a vector, then calculate different statistics from said vector. I've got everything working great except for one part. The program requires the median be calculated, which means I need to sort the data in the vector. However I can't do a quick easy sort, I'm required to use the functions swap(double, double), sort(vector), and index_of_smallest.

how to get these all working in sync to calculate the median(not to mention my algorithms appear to be wrong as I return nothing but 0's for the median value.)

I'm either not sorting right, or the index_of_smallest function is supposed to be doing something I don't realize.

#include <iostream> // for screen and kbd io
#include <iomanip>
#include <fstream> // file io
#include <cstdlib> // for exit()
#include <cmath> // for sqrt
#include <string>
#include <vector>
using namespace std;
void fill_vector(ifstream& in_file,vector<double>& v);

[code]...

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C++ :: Compute Average Median And Mode For Numbers In Vector?

Feb 23, 2014

I needed to compute average median and mode for numbers in a vector. Im having a few issues I have already figured out how to calculate average and median just not mode. Also the program crashes when 0 is entered instead of exiting nicely. Also i keep getting a error on line 47 saying primary expression expected before else.

#include <iostream>
#include <conio.h>
#include <math.h>

[Code]....

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C/C++ :: Calculating Median And Mode In Movie Statistics Program

May 5, 2014

I am having trouble calculating the median and mode in a program that I am writing. When I run the program, lets say there are 5 students being surveyed. The input is as follows, Student #1 sees 2 movies, student #2 sees 6,student #3 sees 5 movies, student #4 sees 2 movies, and student #5 sees 1 movie. However, for the median, I get 5, because that is at element 2, and thus midway through the count, so the program interprets that number as the median. For the mode, even though 5 is repeated twice, the program displays that there was no mode, or displays "-1" (indicating no mode). Here is my code:

Write a program that can be used to gather statistical data about the number of movies college students see in a month. The program should perform the following steps:

A) Ask the user how many students were surveyed. An array of integers with this many elements then be dynamically allocated.

B)/> Allow the user to enter the number of movies each student saw into the array.

C) Calculate and display the average, median, and mode of the values entered.

Input Validation: Do not accept negative numbers for input.

#include <iostream>
#include <iomanip>
using namespace std;
// Function prototypes
double calculateMean(int *, int);
double calculateMedian(int *, int);
int calculateMode(int *, int);

[Code] .....

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C++ :: Generate A List Of 200 Random Numbers - Determine Median / Mode And Average

Oct 24, 2013

I am just starting out programming and have an assignment due in the near future. the problem is I cant seem to figure it out. I started it already but got stuck cant seem to figure it out. Here is the assignment.

Create a program that will generate a list of 200 random numbers (ranging from 1-1000) and determine the medium, mode, and average of the list of numbers. Have the program display the original list ant then display the list in ascending and descending order on the screen.

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C :: How To Find Maximum Value Of Array

Oct 29, 2014

Any way to determine the highest value of an array I created with random numbers. I am confused because the array needs to be initialized in the main, but populated in a function. I was able to populate it using a pointer variable and my results came out good for the initial array values and elements.

In order to figure out the max, I think I would need the results of the populated array. How do I do this when the populated array is stored in a pointer variable? Would I need to create a pointer to the first pointer I created? I tried creating another pointer to the initial array and printing that, but my results were not good.

Code:
#include <stdio.h>
#include <stdlib.h>
#include <time.h>

[Code].....

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C++ :: How To Find First Element In Array

Oct 7, 2013

Lets assume, I use array of 100 the i input 50 element and now i want to find which one is first in array... without using pointer ...

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C++ :: How To Find Mode In Array

Feb 6, 2014

How do you find a mode in array? This is what i got so far. I put this after i sort the array

for (int index = 0; index < size2; index ++) {
//count[mode[index] - 1]++;
if (mode[index] == mode[index + 1]) // compare the first to sec array {
again++;
cout <<"This is number " << again << endl;
}
}

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C++ :: Find Highest Value Of Array

Nov 4, 2013

I am currently trying to make a simple method for an array that would find the highest value. here is currently what i got, but do not know what to change to make it correct.

double FindMax(double stock[], int size){
int size = stock.length();
int max = stock[0];

for(int i = 1; i < size; i++){
if (stock[i] > max)
{max = stock{i};}
}
return max;

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C++ :: Find GCD Of Array Of Numbers

Aug 25, 2013

I wrote this GCD function to find gcd of an array of numbers . Here is the code:

long long GCD(long long min,int loc,long long b[]) {
for (long long i=min;i>0;i--) {
bool p=0;
for (long long x=0;x<loc;x++) {
if (b[x]%i!=0)

[Code] ....

Its returning wrong answers. When i tried 6 14 it returns 6

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C/C++ :: How To Find A Specific Value In Array

Mar 16, 2015

im having trouble with a function im writing. Its supposed to find the minimum value in an array and return the location of that value heres what i have so far :

int findLowest (int numb []) {
// findLow will hold the subscript of the lowest value in the array
int findLow = numb[0];
int x;
for (x = 0; x < 5; x++){
if (numb[x] < findLow)
findLow = x;
}
return findLow;
}

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C/C++ :: How To Find All Possible Combinations In 2D Array With Given Sum

Feb 26, 2015

How to find all possible combinations of coordinates on a 2d grid with a given sum. The sum is not fixed!

E.g. N=nxm=25 thats our grid.

The sum=distance between points on a grid.

For two points distance=|(x1-x2)+(y1-y2)| point A(X1,Y1) B(X1,Y1)

My interest is to know how to find the combinations of coordinates with a given sum, it doesn't matter how many points are there.

If i enter the sum e.g sum=7 and the program has to show all possible combinations which gives the sum of 7 the number of point does not play in row they might be two or maybe more.

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C :: Find The Length Of Char Array

Sep 25, 2014

I am working on a c-programm. In this program I have to convert the amount of money I read on two variables into the corret format. I got Euros and cents on 2 ints. But now I want to add both of those variables in a String (char array). Also i want to find out the length of the new char array.

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C :: Find The Value Occurs Most In 8 Integer Array

Jan 30, 2015

I want to find the value occurs most in an 8 integer array. Here is the code that I have. It does compile, but has not been tested.

Code:
int POLL (int *RANGE_ARRAY) {

int d = 0;
int e = 0;
int f = 0;
int g = 0;
int h = 0;
int j = 0;
intk;

[Code] .....

Does this look right or is there a better way of doing this?

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C :: Find Prime Numbers - How To Use Bit Array

Aug 19, 2013

I wrote some code for class to find prime numbers.The teacher says that I need to revise my code with the requirement below: use a bit array to store the prime number checking. The bit array will also be in the heap. Use the max value of an unsigned 32-bt integer (UINT_MAX) to be the maximum size of the prime number you want to check.

Code:
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <pthread.h>
#include <getopt.h>
#include <ctype.h>
#include <stdint.h>

//function to set all non-primes to 0
void *zero_multiples(void *threadid);

[Code] .....

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