質問編集履歴
1
エラーの追加
test
CHANGED
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File without changes
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test
CHANGED
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@@ -10,6 +10,10 @@
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```java
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@@ -32,6 +36,8 @@
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*/
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try {
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FileReader in = new FileReader(file1);
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@@ -103,3 +109,317 @@
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}
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```
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```java
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116
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117
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public class Lesson{
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118
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119
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static DoublyListInt head; // ポインタ（前方）
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120
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121
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static DoublyListInt tail; // ポインタ（後方）
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122
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123
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static DoublyListInt ptr; // 作業用ポインタ
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124
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125
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static int n; // データ
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126
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127
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static int i; // ループカウンタ
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128
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129
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static int k; // 作業用カウンタ
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130
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131
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static int count; // 比較回数
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132
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133
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static Random rnd = new Random();
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134
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135
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public static void main(String[] args) {
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136
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137
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head = null;
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138
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139
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tail = null;
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140
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141
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ptr = null;
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142
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143
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n = 10;
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144
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145
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count = 0;
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146
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147
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148
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149
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150
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151
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DoublyListInt list = new DoublyListInt(count, head);
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152
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153
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String file1 = "ファイル名";
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154
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155
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String file2 = "ファイル名";
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156
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157
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158
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159
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//file1からデータを入力
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160
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161
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try {
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162
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163
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FileReader fr = new FileReader(file1);
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164
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165
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BufferedReader br = new BufferedReader(fr);
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166
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167
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String line;
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168
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169
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while ((line = br.readLine()) != null) {
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170
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171
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for (int i = 0; i < 10; i++) {
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172
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173
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174
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175
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push(line);
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176
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177
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}
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178
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179
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180
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181
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}
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182
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183
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br.close();
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184
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185
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}
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186
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+
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187
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+
catch (FileNotFoundException e) {
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188
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189
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System.out.println(file1+"ファイルが見つかりません。");
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190
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191
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}
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192
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+
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193
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catch (IOException e) {
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194
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195
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System.out.println(e);
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196
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197
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}
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198
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199
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200
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201
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bubbleSort();
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202
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203
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System.out.println(list);
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204
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205
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206
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207
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//file2に結果を出力
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208
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209
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try {
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210
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211
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BufferedReader br = new BufferedReader(new FileReader(file1));
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212
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213
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PrintWriter pr = new PrintWriter(new BufferedWriter(new FileWriter(file2)));
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214
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215
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br.readLine();
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216
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217
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pr.println(list);
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218
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219
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br.close();
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220
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221
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pr.close();
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222
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+
|
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223
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+
} catch (IOException e) {
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224
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225
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System.out.println(e);
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226
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227
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}
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228
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+
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229
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}
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230
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+
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231
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232
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233
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static int rand(int x) {
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234
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+
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235
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int n;
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236
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+
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237
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n = rnd.nextInt(x);
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238
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+
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239
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return n;
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240
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+
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241
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}
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242
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+
|
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243
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+
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244
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+
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245
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private static void push(int p) {
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246
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247
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head = new DoublyListInt(p, head);
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248
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+
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249
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if (tail == null) {
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250
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251
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tail = head;
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252
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+
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253
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}
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254
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+
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255
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}
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256
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+
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257
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258
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+
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259
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+
static void bubbleSort() {
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260
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+
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261
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+
for (int k = 0; k < n; k++) {
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262
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+
|
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263
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+
ptr = head;
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264
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+
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265
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+
for (int j = n; k < j; j--) {
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266
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+
|
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267
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+
boolean ex = compare();
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268
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+
|
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269
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+
if (ex) {
|
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270
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+
|
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271
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+
swap(ptr);
|
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272
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+
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273
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+
}
|
|
274
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+
|
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275
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+
count++;
|
|
276
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+
|
|
277
|
+
if (ptr != null && ptr.next != null) {
|
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278
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+
|
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279
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+
ptr = ptr.next;
|
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280
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+
|
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281
|
+
}
|
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282
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+
|
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283
|
+
}
|
|
284
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+
|
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285
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+
}
|
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286
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+
|
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287
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+
}
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288
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+
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289
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+
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290
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+
|
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291
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+
static boolean compare() {
|
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292
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+
|
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293
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+
if (ptr != null && ptr.next != null) {
|
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294
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+
|
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295
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+
int s = ptr.value;
|
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296
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+
|
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297
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+
int t = ptr.next.value;
|
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298
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+
|
|
299
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+
if (s < t) {
|
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300
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+
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301
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+
System.out.println(s + "<" + t);
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302
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+
|
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303
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+
return true;
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304
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+
|
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305
|
+
} else {
|
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306
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+
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307
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+
System.out.println(s + ">" + t);
|
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308
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+
|
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309
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+
}
|
|
310
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+
|
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311
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+
|
|
312
|
+
|
|
313
|
+
}
|
|
314
|
+
|
|
315
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+
return false;
|
|
316
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+
|
|
317
|
+
}
|
|
318
|
+
|
|
319
|
+
|
|
320
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+
|
|
321
|
+
static void swap(DoublyListInt y) {
|
|
322
|
+
|
|
323
|
+
DoublyListInt a = null;
|
|
324
|
+
|
|
325
|
+
DoublyListInt b = null;
|
|
326
|
+
|
|
327
|
+
|
|
328
|
+
|
|
329
|
+
if ((y != null) && (y.next != null)) {
|
|
330
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+
|
|
331
|
+
a = y;
|
|
332
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+
|
|
333
|
+
b = a.next;
|
|
334
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+
|
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335
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+
|
|
336
|
+
|
|
337
|
+
if (a.prev == null) {
|
|
338
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+
|
|
339
|
+
head = b;
|
|
340
|
+
|
|
341
|
+
} else {
|
|
342
|
+
|
|
343
|
+
a.prev.next = b;
|
|
344
|
+
|
|
345
|
+
}
|
|
346
|
+
|
|
347
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+
|
|
348
|
+
|
|
349
|
+
if (b.next == null) {
|
|
350
|
+
|
|
351
|
+
tail = a;
|
|
352
|
+
|
|
353
|
+
} else {
|
|
354
|
+
|
|
355
|
+
b.next.prev = a;
|
|
356
|
+
|
|
357
|
+
}
|
|
358
|
+
|
|
359
|
+
|
|
360
|
+
|
|
361
|
+
b.prev = a.prev;
|
|
362
|
+
|
|
363
|
+
a.prev = b;
|
|
364
|
+
|
|
365
|
+
|
|
366
|
+
|
|
367
|
+
a.next = b.next;
|
|
368
|
+
|
|
369
|
+
b.next = a;
|
|
370
|
+
|
|
371
|
+
|
|
372
|
+
|
|
373
|
+
System.out.println();
|
|
374
|
+
|
|
375
|
+
System.out.println("結果");
|
|
376
|
+
|
|
377
|
+
showdata();
|
|
378
|
+
|
|
379
|
+
ptr = y.prev;
|
|
380
|
+
|
|
381
|
+
}
|
|
382
|
+
|
|
383
|
+
}
|
|
384
|
+
|
|
385
|
+
static void showdata() {
|
|
386
|
+
|
|
387
|
+
ptr = tail;
|
|
388
|
+
|
|
389
|
+
for (int i = 0; i < n; i++) {
|
|
390
|
+
|
|
391
|
+
if (ptr != null) {
|
|
392
|
+
|
|
393
|
+
int v = ptr.value;
|
|
394
|
+
|
|
395
|
+
System.out.println(i + "\t" + v);
|
|
396
|
+
|
|
397
|
+
ptr = ptr.prev;
|
|
398
|
+
|
|
399
|
+
}
|
|
400
|
+
|
|
401
|
+
}
|
|
402
|
+
|
|
403
|
+
System.out.println();
|
|
404
|
+
|
|
405
|
+
}
|
|
406
|
+
|
|
407
|
+
|
|
408
|
+
|
|
409
|
+
}
|
|
410
|
+
|
|
411
|
+
```
|
|
412
|
+
|
|
413
|
+
自分なりにやってみた結果
|
|
414
|
+
|
|
415
|
+
|
|
416
|
+
|
|
417
|
+
DoublyListInt を型に解決できません
|
|
418
|
+
|
|
419
|
+
型 Lesson のメソッド push(int) は引数 (String) に適用できません
|
|
420
|
+
|
|
421
|
+
|
|
422
|
+
|
|
423
|
+
とでできました。
|
|
424
|
+
|
|
425
|
+
どこをどのように直したらいいでしょうか。
|