C# Coding Test Course, 022 Sorting Numbers 3

022 Sorting Numbers 3

Hello, everyone! Today, we will explore one of the algorithm problems titled “Sorting Numbers 3”. This question focuses on understanding various approaches to sorting algorithms and learning how to solve the problem using C#.

Problem Description

The task is to sort the given numbers. The input consists of n integers (integer range: -1,000,000 to 1,000,000), and these numbers need to be sorted in ascending order. Here, n always refers to the count of integers and will take a value between 1 and 1,000,000.

Input Format

The first line contains n (the number of integers).
From the second line onwards, n integers are given.

Output Format

Print each sorted number on a new line.

Sample Input

Sample Output

Solution Process

By working on this problem, we will learn how to utilize C#’s built-in sorting functionalities and how sorting algorithms perform with large data sets.

Step 1: Input Handling

First, we need to receive input from the user. In C#, we can use the Console.ReadLine() method to input data. We will need to convert the received string into an array of integers.

int n = Convert.ToInt32(Console.ReadLine());
int[] numbers = new int[n];
for (int i = 0; i < n; i++)
{
    numbers[i] = Convert.ToInt32(Console.ReadLine());
}

Step 2: Sorting Process

There are several methods to sort numbers, but using the built-in Array.Sort() method in C# is the most efficient. This method is based on quicksort and has an average time complexity of O(n log n).

Array.Sort(numbers);

Step 3: Output the Result

Now we are at the stage of outputting the sorted array. We simply need to print each element of the sorted array to the console in order.

foreach (var number in numbers)
{
    Console.WriteLine(number);
}

Full Code

By combining all the above processes, the final code is as follows:

using System;

class Program
{
    static void Main(string[] args)
    {
        int n = Convert.ToInt32(Console.ReadLine());
        int[] numbers = new int[n];
        
        for (int i = 0; i < n; i++)
        {
            numbers[i] = Convert.ToInt32(Console.ReadLine());
        }

        Array.Sort(numbers);

        foreach (var number in numbers)
        {
            Console.WriteLine(number);
        }
    }
}

Conclusion

In this lesson, we have examined the process of sorting numbers in C#. This problem is a fun and valuable exercise for beginners learning algorithms. By implementing sorting algorithms, one can enhance their understanding of various input forms and the importance of writing optimized code.

Additionally, the performance differences in sorting algorithms can vary based on several factors. It's also important to consider different sorting algorithms based on the type of input data and the range of integers. Therefore, in practice, it is crucial to analyze the characteristics of the problem and the data well and choose an appropriate algorithm.

References

To help deepen your understanding of algorithms and data structures, here are some recommended resources:

Now, I hope you will develop the ability to effectively solve problems using C#. See you in the next lesson!