質問編集履歴
3
情報追加
test
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test
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@@ -184,6 +184,8 @@
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var tableIndex = Convert.ToInt32(bit6, 2);
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//ここでインデックスが配列の境界外ですとエラーが出ます
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sb.Append(conversionTable[tableIndex]);
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}
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2
情報の追加
test
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test
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@@ -36,6 +36,48 @@
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36
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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namespace Base64
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{
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class Program
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{
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public static char[] conversionTable = new char[]
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{
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'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J',
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'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T',
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'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd',
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'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',
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'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x',
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'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7',
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'8', '9', '+', '/',
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};
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@@ -138,9 +180,9 @@
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184
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-
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var tableIndex = Convert.ToInt32(bit6, 2);
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142
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-
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143
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-
//ここでインデックスが配列の境界外ですとエラー
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sb.Append(conversionTable[tableIndex]);
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@@ -166,7 +208,9 @@
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-
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}
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1
追加編集為
test
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File without changes
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test
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@@ -25,3 +25,151 @@
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char[] bits変数の中身でLINQのselectmanyやラムダを使わない方法を知りたいです。
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宜しくお願い致します。
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追記＿＿＿
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32
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33
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34
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35
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```ここに言語を入力
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36
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static void Main(string[] args)
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{
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Console.WriteLine("文字を入力してください");
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48
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string text = Console.ReadLine();
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Encoding encoding = new UTF8Encoding();
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string aaa = Encode(text, encoding);
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Console.WriteLine($"{aaa}");
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Console.ReadKey();
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}
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public static string Encode(string text, Encoding encoding)
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67
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{
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68
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69
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//stringビルダー型の変数を初期化
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71
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StringBuilder sb = new StringBuilder();
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72
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73
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75
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// 変更したい文字列を２進数に変換する
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byte[] bytes = encoding.GetBytes(text);
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79
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80
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81
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//LINQを使わず文字列に展開
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83
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var list = new List<string>();
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84
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85
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foreach (var octet in bytes)
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86
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87
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{
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88
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89
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list.Add(Convert.ToString(octet, 2).PadLeft(8, '0'));
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90
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91
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}
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92
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93
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95
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var bits = list.ToArray();
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96
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97
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var bit6 = "";
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98
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99
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for (int i = 0; i < bits.Length; i++)
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{
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bit6 += bits[i];
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106
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107
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108
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109
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//6ビット文字列を対応表で変換
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111
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if (bit6.Length == 6)
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{
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int tableIndex = Convert.ToInt32(bit6, 2);
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sb.Append(conversionTable[tableIndex]);
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121
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bit6 = string.Empty;
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125
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}
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126
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127
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128
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129
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130
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131
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if (i == bits.Length - 1 && bit6.Length != 0)
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132
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133
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{
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134
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135
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var padCount = 6 - bit6.Length;
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136
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137
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for (int j = 0; j < padCount; j++) bit6 += "0";
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138
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139
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140
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141
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var tableIndex = Convert.ToInt32(bit6, 2);
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142
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+
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143
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+
//ここでインデックスが配列の境界外ですとエラー
|
|
144
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+
|
|
145
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+
sb.Append(conversionTable[tableIndex]);
|
|
146
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+
|
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147
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+
}
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148
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+
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149
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+
}
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150
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+
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151
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152
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+
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153
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154
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155
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while (sb.Length % 4 != 0) sb.Append("=");
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156
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157
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158
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159
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+
return sb.ToString();
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160
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161
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162
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163
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164
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165
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}
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166
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167
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168
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169
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170
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171
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+
}
|
|
172
|
+
|
|
173
|
+
}
|
|
174
|
+
|
|
175
|
+
```
|