Step by Step solution about How to resolve the algorithm Kernighans large earthquake problem step by step in the C# programming language

The code snippet you provided is a C# program that reads a file containing earthquake data and filters the data to only include earthquakes with a magnitude greater than a specified limit. The program then prints the filtered data to the console.

The program starts by defining a method called LargeEarthquakes that takes two parameters: a filename and a magnitude limit. The method returns an IEnumerable of string arrays, where each string array represents an earthquake.

The LargeEarthquakes method uses the File.ReadLines method to read the lines of the specified file. For each line in the file, the method splits the line into parts using the Split method. The Split method takes a character array as an argument, and it splits the line into parts at each occurrence of the specified characters. In this case, the Split method is called with default(char[]), which means that the line will be split at every character.

The LargeEarthquakes method then uses a LINQ query to filter the parts of each line. The query selects the parts of each line where the third part (the earthquake magnitude) is greater than the specified limit.

The LargeEarthquakes method finally returns the filtered data as an IEnumerable of string arrays.

The Main method of the program calls the LargeEarthquakes method with the filename data.txt and the magnitude limit 6. The Main method then iterates over the filtered data and prints each earthquake to the console.

Here is an example of the output of the program:

7.9 2015-09-16 Tonga
7.8 2016-09-01 Mexico

using System;
using System.IO;
using System.Linq;
using System.Collections.Generic;

public class Program
{
    static void Main() {
        foreach (var earthquake in LargeEarthquakes("data.txt", 6))
            Console.WriteLine(string.Join(" ", earthquake));
    }

    static IEnumerable<string[]> LargeEarthquakes(string filename, double limit) =>
        from line in File.ReadLines(filename)
        let parts = line.Split(default(char[]), StringSplitOptions.RemoveEmptyEntries)
        where double.Parse(parts[2]) > limit
        select parts;

}