C++ Sorting and Searching Exercise: Sort the values of three variables which contain any value

Last update on December 20 2024 12:25:22 (UTC/GMT +8 hours)

Write a C++ program to sort the values of three variables which contain any value (numbers and/or literals).

Sample Solution:

C++ Code :

// Including necessary C++ libraries
#include <iostream>
#include <string>
#include <vector>

// Template function to sort three variables of type T
template <class T>
void sort3var(T& x, T& y, T& z) {
    // Creating a vector to hold the variables
    std::vector<T> v;
    // Adding variables x, y, and z to the vector
    v.push_back(x); 
    v.push_back(y); 
    v.push_back(z);

    // Boolean flag to control the sorting loop
    bool b = true;
    // Sorting loop using a bubble sort algorithm
    while (b) {
        b = false;
        // Iterating through the vector elements for sorting
        for (size_t i = 0; i < v.size() - 1; i++) {
            // Checking if the current element is greater than the next element
            if (v[i] > v[i + 1]) {
                // Swapping elements if the condition is met
                T t = v[i];
                v[i] = v[i + 1];
                v[i + 1] = t;
                // Setting flag to continue sorting
                b = true;
            }
        }
    }
    // Assigning sorted values back to variables x, y, and z
    x = v[0]; 
    y = v[1]; 
    z = v[2];
}

// Main function
int main(int argc, char* argv[]) {
    // Initializing integer variables x, y, and z
    int x = 2539, y = 0, z = -2560;
    // Sorting integers x, y, and z using sort3var function and displaying them
    sort3var(x, y, z);
    std::cout << x << "\n" << y << "\n" << z << "\n\n";

    // Initializing string variables xstr, ystr, and zstr
    std::string xstr, ystr, zstr;
    xstr = "abcd, ABC, xzy";
    ystr = "abc @ example . com!";
    zstr = "(from the \"Page of 123\")";
    // Sorting strings xstr, ystr, and zstr using sort3var function and displaying them
    sort3var(xstr, ystr, zstr);
    std::cout << xstr << "\n" << ystr << "\n" << zstr << "\n\n";

    // Initializing floating-point variables xnf, ynf, and znf
    float xnf = 100.3f, ynf = -36.5f, znf = 12.15f;
    // Sorting floats xnf, ynf, and znf using sort3var function and displaying them
    sort3var(xnf, ynf, znf);
    std::cout << xnf << "\n" << ynf << "\n" << znf << "\n\n";

    // Returning 0 to indicate successful execution
    return 0;
}

Sample Output:

-2560
0
2539

(from the "Page of 123")
abc @ example . com!
abcd, ABC, xzy

-36.5
12.15
100.3

Flowchart:

C++ Code Editor:

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