C++ :: How To Randomly Select Uniform Value From Range Of Numbers

Dec 28, 2013

How do you randomly select a uniform value from a range of numbers?

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C# :: Randomly Select Strings From Array

Mar 27, 2014

I am trying to select 3 questions randomly from a string array and create another array with the randomly selected questions then display them in labels.

As you can see in the code I have used Array.Clear method to remove the selected question from the array to prevent duplicate questions being selected. For some reason this is not working! The "Randomly" selected question is ALWAYS the 5th element [4] of the randomQuestions array and this element is duplicated for each iteration of the loop.

public void shuffleQuestions() {
string questionselected;
string[] randomQuestions = {
"What is the speed limit from the time you pass an Accident sign until you have passed the crash site?",
"What must you do at a red traffic light?",
"What is the maximum possible speed limit on the open road?",

[Code ....

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C/C++ :: Read All Song Titles From A Text File - Randomly Select And Output?

Apr 19, 2015

So far I have managed to sort songs by their string length in main. The void function is there because i learned how to create it, but it's not being used because I dont know how to use it.

Expanding on main, how would I go about selecting a random song from the array?

#include <fstream>
#include <iomanip>
#include <iostream>
#include <string>
using namespace std;
struct Song {
string song;

[code]....

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C++ :: Normal Distribution Range - Select Objects On A Vector

May 23, 2014

I'm implementing an normal_distribution to select objects on a vector. The thing is I can't use values greater then 1 or less then -1. Here is what could be done:

gausx=gaus_distributionx(generator);
while((gausx>1) || (gausx<-1))
gausx=gaus_distributionx(generator);

The question is if the distribution would loose it's power to be a normal distribution, because some of the gerated numbers wouldn't be used. Any way to set ranges for the distribution?

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C :: Subset Combinations - Select All Numbers Right Or No Numbers Right

Dec 22, 2013

I need a list generated of all possible subset combinations for the set 1,2,3,4,5,6,7,8,9,10,12. Select six. Numbers cannot repeat.

Example subset: 1,2,3,4,5,6 (six selected, no repeats).

Example of what I dont need: 1,1,2,2,3,3,4,4,5,5,12,12 or 1,1,1,1,1,6.

I will also need the opposites removed, meaning...if I have 1,3,5,7,9,11 then I need 2,4,6,8,10,12 eliminated from the final list.

This is for a game, where you must select all numbers right or no numbers right.

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C++ :: Loop Randomly Until Get All Seven Numbers

Nov 13, 2013

Is it possible to loop randomly. For example

for ( int i = 0; i<= 6 ; i++ )

I don't want i to acsend from 0 to 6 but i want it to get all numbers randomly. For example

first time r = 5 second time r = 2 and so on

until it gets all the seven numbers

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C++ :: Getting Sum Of Two Randomly Generated Numbers

Feb 15, 2015

I can't get the sum of two randomly generated numbers - I don't believe the program is adding wrong what I think might be happening is upon hitting enter its adding two new randomly generated numbers -

Code:
// Program functions as a math tutor
#include <cstdlib>
#include <iostream>
#include <ctime>
using namespace std;
int main() {
// Constants
const int Min_Value = 1;

[Code] .....

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C++ :: Distribute Numbers Randomly - No Duplicates

Dec 13, 2013

I want to create a randomly ordered array of integers where there are no duplicates. Is there a way of doing this in one iteration? Or maybe even a standard function for this?

I'm looking for something like this:
A2 = [3 2 1 6 7 8 4 5]

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C :: Printing 21 Different Numbers That Are Randomly Generated?

Mar 2, 2014

The program is supposed to be printing 21 different numbers that are randomly generated. Why am I getting the same number 21 times? Using dev C++ compiler.

Code:

/*prints random numbers between 1 - 99*/
#include <stdio.h>
#include <stdlib.h>
#include <time.h>

[Code]......

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C++ :: Insert 10 Different Numbers To BST And Print Out Randomly?

Jul 1, 2014

How to insert 10 different numbers to a BST and print out randomly?

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C++ :: How To Get Rid Of Negative Number From Randomly Generated Numbers

Oct 21, 2013

I have a error with one of my programs. I'm supposed to get rid of negative numbers when there are numbers that are randomly generated. Here is the middle part of the code.

{
int vectorLength = 10;
vector<int> bothSigns(vectorLength);
cout << " Input vector: ";
for (int i = 0; i < vectorLength; i = i + 1)
{ bothSigns[i] = rand()%201 - 100;

[code] .....

The part where i'm supposed to start is after the /////'s. However, whenever I input a number for the random numbers(not put in part of code), i keep getting a segmentation error.

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C++ :: How To Randomly Insert Certain Numbers Into Linked List With 10 Nodes

Feb 8, 2014

How to randomly insert certain numbers into a linked list with 10 nodes. Meaning I want to put for example numbers 1 5 10 15 20 25 30 35 40 50 in random locations in the linked list.

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C++ :: Creating A Text File For Randomly Generated Numbers

Apr 28, 2015

My code compiles, but it doesn't get past this:

Here's the code:
#include <cstdlib>
#include <iostream>
#include <fstream>
using namespace std;

//ofstream random_numbers("randIntContainer.txt");
ofstream random_numbers("D:/StudentData/Documents/DataStructures/SortingAlgorithms/randIntContainer.txt");
void generateNumbers();

[Code] ....

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C++ :: Random Numbers Are Not In Specified Range

Nov 9, 2014

My program behaves weird... I wanted to generate 10 random numbers from 1 to 100 each of them bigger than previous, using the while loop and function that returns a random number in specified range.

When I run the program, I get numbers much bigger than 100, even negative number, and numbers are same every time I run the program.

Code:
#include <ctime>#include <cstdlib>
#include <iostream>
using namespace std;
int range(int low, int high);

[Code] .....

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C++ :: Prime Numbers In A Given Range

Feb 17, 2013

I have an assignment where I have to use two for loops. I need to ask the user for any two numbers and be able to list all the numbers in between and their factors and state whether or not the number is prime or not.

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C++ :: Finding A Range Between 2 Numbers?

Sep 23, 2013

Ok so I'm reading the Programming: Principles and Practice using C++ and Im stuck in Drill 4 part 5. It says:

Change the program so that it writes out the "numbers are almost equal" after writing out which is the larger and the smaller if the two numbers differ by less than 1.0/10000000

I'm using an If statement for it... I just need know what the formula is to check 2 numbers that were entered by person if they land within the range specified above. so then I can cout << "numbers are almost equal" << endl;

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C :: Calculate Prime Numbers In Range And Return Count Of Prime Numbers

Apr 28, 2013

I wrote a program which sends a starting and ending range to other processes and the processes calculate the prime numbers in that range and return the count of prime numbers to the head process, process 0. But this is not working properly at the moment. I realize I still have to split up the range based on how many processes I have...I still have not figured out how I want to set that up. I

Code:

#include <stdio.h>
#include <stdlib.h>
#include <mpi.h>
int isPrime(int num);
int main(int argc, char **argv){
}

[code]....

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C++ :: How To Make Array With A Range Of Numbers From 1 - 9 Only

Jan 29, 2013

I want to make an array with a range of number from 1-9 only. So if the user entered more than or less than the number indicated it will be error and ask the user to reinput the data. So far my code can be used to do so that if the user enter the number one by one... But if the user entered all the number in one shot the reentered value will be prompt to the back automatically for some reason...Let say 10,2,3,4 which was suppose to be 1,2,3,4 became 2,3,4,1 instead... here is the code:

#include<stdio.h>
void main() {
int num[4][4];
int row,col,x,y;
for(row=0;row<4;row++)

[Code] .....

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C++ :: Find All Prime Numbers In A Range

Oct 17, 2013

I am trying to create a program that lists all prime numbers within a range of two number. Why the below program isn't working?

#include <iostream>
using namespace std;
int main(){
int high_range;
int low_range;
int w;

[Code] .....

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C/C++ :: Finding Happy Numbers For A Given Range

Oct 5, 2014

I'm currently working on an assignment that finds all happy numbers for a given range. Such as 1- 10. My current code just isn't cutting it. I have to use a user defined function and return a bool value to main in order to output if the number is happy or if it sad. For some reason, I cannot get it to loop properly. the first number will be displayed correctly, but the second and third are just squares of the first number, instead of being squared by their single digits. I'm dividing by 10 to get the first number of the digit entered, then I'm using mod to get the remainder. One thing I did notice was that the num2 was putting a remainder of 30 for 130, and I'm not too sure what I need to do to change that, without affecting the whole program.

#include <iostream>
#include <iomanip>
#include <cmath>
#include <cctype>
#include <string>
#include <cstdlib>
using namespace std;
Program calculates the bill for a user

[Code] ....

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C/C++ :: Get Double Random Numbers In Range From 0 To 1?

Apr 19, 2012

How to get double random numbers in the range from 0 to 1?

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C :: GSL And OpenMP - Getting Random Numbers That Are Out Of Expected Range

May 2, 2013

I am trying to parallelize some of my code with OpenMP. When I switch to using multiple threads I start getting random numbers that are out of the expected range.

Here is a small example:

Code:
#include <stdio.h>
#include </usr/local/include/gsl/gsl_rng.h>
#include </usr/local/include/gsl/gsl_randist.h>
int main() {
int mySeed=0;
const gsl_rng_type *T;
T = gsl_rng_ranlxs2;
gsl_rng *r_1 ;

[Code] .....

gsl_rng_uniform should only output number in the range [0,1) but with multiple threads it outputs larger number as well.

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C :: Loading Array With Random Numbers Within A Range

Oct 5, 2013

How would i go about loading an array with random numbers with in a range. For example, loading an array of 500 elements with random numbers in the range of 50-100.

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C :: Determine How Many Numbers In A Range Are Divisible By Third - Loop

Mar 1, 2013

I've pretty much finished the entire program, except for the actual calculation part.

"Given a range of values determine how many integers within that range, including the end points, are multiples of a third value entered by the user. The user should be permitted to enter as many of these third values as desired and your output will be the sum of total multiples found."

I've defined functions to take user input for the low range, high range and a do-while loop to take as many third inputs as the user wants (terminated by entering -1, as requested by the question)

To actually calculate if they're divisible, I found out that if A%B = 0, then they are divisible, so I thought I would create a loop where each value in the range between A and B is checked against the third value to see if they output a zero.

What I need to end up with is a program that tells the user how many integers are divisible by the numbers in the range, i.e: "Enter the low range value: 335 Enter the high range value: 475 Enter a value to check within the range: 17 Enter a value to check within the range: -1 There are 8 total values that are divisible by the numbers in the range." Going back to my original question, how would I create a loop or something to "check" how many values are equal to zero, and consequently increment a variable for each instance? (This is how I think it should be done)

Code:

#include <stdio.h>
//GLOBAL DECLARATIONS
int getlowR();
int gethighR(int);

[Code].....

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C++ :: Generate Random Numbers Within Specific Range?

Jun 5, 2014

So, there has got to be an easier way to generate random numbers within a specific range. Here is the code that I have been using, for a range of 1-6:

#include <iostream>
#include <ctime>
#include <cstdlib>
using namespace std;

[Code]....

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C++ :: Find Factors And Primes For A Range Of Numbers

Oct 9, 2014

I'm trying to write a program that will find all the factors and primes for a range of numbers. I have the inner loop working but I am having trouble writing the outer loop that will output the range of numbers instead of just finding the factors for one number.

int n1 = 0;
int n2;
int factor = 0;
cout << "Enter a starting number: ";
cin >> n1;
cout << "Enter a ending number: ";

[Code] ....

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