C++ Class Template Specialization in C++ Hacker Rank Solution

Hello coders, In this post, you will learn how to solve the C++ Class Template Specialization in C++ Hacker Rank Solution. This problem is a part of the HackerRank C++ Programming Series.

You can practice and submit all HackerRank problem solutions in one place. Find a solution for other domains and Sub-domain. I.e. Hacker Rank solution for HackerRank C ProgrammingHackerRank C++ ProgrammingHackerRank Java Programming, HackerRank Python ProgrammingHackerRank Linux ShellHackerRank SQL Programming, and HackerRank 10 days of Javascript.

C++ Class Template Specialization in C++ Hacker Rank Solution
C++ Class Template Specialization in C++ – Hacker Rank Solution

As you already know that this site does not contain only the Hacker Rank solutions here, you can also find the solution for other problems. I.e. Web Technology,Data StructuresRDBMS ProgramsJava Programs Solutions,  Fiverr Skills Test answersGoogle Course AnswersLinkedin Assessment, and Coursera Quiz Answers.

C++ Class Template Specialization in C++ Hacker Rank Solution

Objective

You are given a main function which reads the enumeration values for two different types as input, then prints out the corresponding enumeration names. Write a class template that can provide the names of the enumeration values for both types. If the enumeration value is not valid, then print unknown.


Input Format :

The first line contains t, the number of test cases.
Each of the t subsequent lines contains two space-separated integers. The first integer is a color value, c, and the second integer is a fruit value, f.

Constraints :

  • 1<= t <=100
  • -2*10^9 <= c <= 2*10^9
  • -2*10^9 <= f <= 2*10^9

Output Format:

The locked stub code in your editor prints t lines containing the color name and the fruit name corresponding to the input enumeration index.


Sample Input :

2
1 0
3 3

Sample Output :

green apple
unknown unknown

Explanation :

Since t = 2, there are two lines of output.

  1. The two input index values, 1 and 0, correspond to green in the color enumeration and apple in the fruit enumeration. Thus, we print green apple.
  2. The two input values, 3 and 3, are outside of the range of our enums. Thus, we print unknown unknown.


C++ Class Template Specialization in C++ Hacker Rank Solution

#include <iostream>
using namespace std;
enum class Fruit { apple, orange, pear };
enum class Color { red, green, orange };
/* C++ Class Template Specialization in C++ - Hacker Rank Solution START */
template <typename T> struct Traits;
char s []="unknown";
char f0 []="apple";
char f1 []="orange";
char f2 []="pear";
char c0 []="red";
char c1 []="green";
char c2 []="orange";
template <>
struct Traits<Fruit>
{
    public:
    static char* name(int a)
    {
        if(a>=3 || a<0)
            return s;
        else if (a==0)
            return f0;
        else if (a==1)
            return f1;
        else
            return f2;
    }
};
template <>
struct Traits<Color>
{
    public:
    static char* name(int a)
    {
        if(a>=3 || a<0)
            return s;
        else if (a==0)
            return c0;
        else if (a==1)
            return c1;
        else
            return c2;
    }
};
/* C++ Class Template Specialization in C++ - Hacker Rank Solution END */
int main()
{
	int t = 0; std::cin >> t;
    for (int i=0; i!=t; ++i) {
        int index1; std::cin >> index1;
        int index2; std::cin >> index2;
        cout << Traits<Color>::name(index1) << " ";
        cout << Traits<Fruit>::name(index2) << "\n";
    }
}

Disclaimer: The above Problem (C++ Class Template Specialization in C++ ) is generated by Hackerrank but the Solution is Provided by Chase2Learn. This tutorial is only for Educational and Learning purposes. Authority if any of the queries regarding this post or website fill the following contact form thank you.

FAQ:

Which language is best for HackerRank?

While JavaScript is the best-known language, HackerRank also found that only 5% of respondents say it is their first programming language.

Is HackerRank good for beginners?

HackerRank is very good for beginners so even if you want to print your first program “Hello World!” then definitely HackerRank gives this opportunity to you. It has a pretty good UI with boilerplate code pre-written that helps beginners to start competitive coding.

What is meant by HackerRank?

HackerRank is a tech company that focuses on competitive programming challenges for both consumers and businesses. Developers compete by writing programs according to provided specifications. Wikipedia

What is C++ programming used for?

C++ is a general-purpose programming language created by Danish computer scientist Bjarne Stroustrup as an extension of the C programming language, or “C with Classes”. Wikipedia

Where can I find HackerRank solutions in CPP?

in this post you will get all the solutions of HackerRank CPP Problems.

Finally, we are now, in the end, I just want to conclude some important message for you

Note:- I compile all programs, if there is any case program is not working and showing an error please let me know in the comment section. If you are using adblocker, please disable adblocker because some functions of the site may not work correctly.

Please share our posts on social media platforms and also suggest to your friends to Join Our Groups. Don’t forget to subscribe.

Sharing Is Caring

Leave a Comment