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feat: add "Lab4.FirstEqualLast" using regex

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This commit is contained in:
Rokas Puzonas 2021-11-22 01:31:51 +02:00
parent 3ca49e564a
commit b4b0afba32
2 changed files with 33 additions and 3 deletions
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2
Lab4.FirstEqualLast/Program.cs
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@ -8,7 +8,7 @@ namespace Lab4.FirstEqualLast
public static void Main(string[] args)
{
const string CFd = "Duomenys.txt";
char [] punctuation = {' ','.',',','!','?',':',';','(',')','\t'};
string punctuation = "[\\s,.;:!?()\\-]+";
Console.WriteLine("Sutampančių žodžių {0, 3:d}", TaskUtils.Process(CFd, punctuation));
}
}

34
Lab4.FirstEqualLast/TaskUtils.cs
View File

@ -1,11 +1,41 @@
using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;
namespace Lab4.FirstEqualLast
{
public class TaskUtils
{
/** Reads file and finds the number of words having same the first and
the last letters.
@param fin – name of data file
@param punctuation – punctuation marks to separate words */
public static int Process(string fin, string punctuation)
{
string[] lines = File.ReadAllLines(fin, Encoding.UTF8);
int equal = 0;
foreach (string line in lines)
if (line.Length > 0)
equal += FirstEqualLast(line, punctuation);
return equal;
}
/** Splits line into words and counts the words having same the first
and the last letters.
@param line – string of data
@param punctuation – punctuation marks to separate words */
private static int FirstEqualLast (string line, string punctuation)
{
string[] parts = Regex.Split(line, punctuation);
int equal = 0;
foreach (string word in parts)
if(word.Length > 0) // empty words at the end of line
if (word[0] == word[word.Length - 1])
equal++;
return equal;
}
/** Reads file and finds the number of words having same the first and
the last letters.
@param fin – name of data file
@ -15,8 +45,8 @@ namespace Lab4.FirstEqualLast
string[] lines = File.ReadAllLines(fin, Encoding.UTF8);
int equal = 0;
foreach (string line in lines)
if (line.Length > 0)
equal += FirstEqualLast(line, punctuation);
if (line.Length > 0)
equal += FirstEqualLast(line, punctuation);
return equal;
}