C# - 文字列(StringBuilderクラス(可変性オブジェクト)、Regexクラス(正規表現))

初めてのC# 第2版
Jesse Liberty (著) Brian MacDonald (著)
日向俊二 (訳)
原書: Learning C# 2005

開発環境

• Microsoft Windows 8 Pro 64bit 日本語 (OS)
• Microsoft Visual Studio Express 2012 for Windows Desktop (IDE)
• プログラミング言語: C#

『初めてのC# 第2版』(Jesse Liberty+Brian MacDonald著、日向俊二訳、オライリー・ジャパン、2006年、ISBN978-487312-194-7)の 第15章(文字列)15.6(練習問題)練習15-2.を解いてみる。

その他参考書籍

• プログラミングC# 第6版
• C#クックブック 第3版

練習15-2.

コード

using System;
using System.Text;
using System.Text.RegularExpressions;

class Tester
{
    public void Run()
    {
        string s = "We hold these truths to be self-evident, " +
            "that all men are created equal, " +
            "that they are endowed by their Creator with " +
            "certain unalienable Rights," +
            "that among these are Life, " +
            "Liberty nd the pursuit of Happiness.";
        StringBuilder sBuilder = new StringBuilder();
        Regex regEx = new Regex(@", |,| ");
        int i =1;
        foreach (string item in regEx.Split(s))
        {
            sBuilder.AppendFormat("{0}: {1}\n", i, item);
            i += 1;
        }
        Console.WriteLine(sBuilder);
    }
    static void Main()
    {
        Tester t = new Tester();
        t.Run();
    }
}

入出力結果(Console Window)

1: We
2: hold
3: these
4: truths
5: to
6: be
7: self-evident
8: that
9: all
10: men
11: are
12: created
13: equal
14: that
15: they
16: are
17: endowed
18: by
19: their
20: Creator
21: with
22: certain
23: unalienable
24: Rights
25: that
26: among
27: these
28: are
29: Life
30: Liberty
31: nd
32: the
33: pursuit
34: of
35: Happiness.

続行するには何かキーを押してください . . .

ちなみにJavaScriptの場合。

コード(BBEdit)

var s = "We hold these truths to be self-evident, " +
            "that all men are created equal, " +
            "that they are endowed by their Creator with " +
            "certain unalienable Rights," +
            "that among these are Life, " +
            "Liberty nd the pursuit of Happiness.",
    words = s.split(/, |,| /),
    result = "",
    i, max;
for (i = 0, max = words.length; i < max; i += 1) {
    result += (i + 1) + ": " + words[i] + "\n";
}
$('#pre0').text(result);

pythonの場合。

コード(BBEdit)

sample.py

#!/usr/bin/env python3.3
#-*- coding: utf-8 -*-

import re

s = ("We hold these truths to be self-evident, " + 
            "that all men are created equal, " + \
            "that they are endowed by their Creator with " + 
            "certain unalienable Rights," + 
            "that among these are Life, " + 
            "Liberty nd the pursuit of Happiness.")
words = re.split(", |,| ", s)
i = 1
for word in words:
    print("{0}: {1}".format(i, word))
    i += 1

入出力結果(Terminal)

$ ./sample.py
1: We
2: hold
3: these
4: truths
5: to
6: be
7: self-evident
8: that
9: all
10: men
11: are
12: created
13: equal
14: that
15: they
16: are
17: endowed
18: by
19: their
20: Creator
21: with
22: certain
23: unalienable
24: Rights
25: that
26: among
27: these
28: are
29: Life
30: Liberty
31: nd
32: the
33: pursuit
34: of
35: Happiness.
$