質問編集履歴
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File without changes
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@@ -168,4 +168,31 @@
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168
168
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169
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```ここに言語名を入力
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170
170
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Java
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171
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-
```
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171
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```
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172
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+
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173
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public class DoublyElement {
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174
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private Object data;
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175
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private DoublyElement next, previous;
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176
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private DoublyElement () {
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177
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}
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178
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public DoublyElement (Object obj) {
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179
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this.data = obj;
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180
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}
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181
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public Object getData() {
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182
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return this.data;
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183
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}
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184
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public DoublyElement getNextElement() {
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185
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return this.next;
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186
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}
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187
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public void setNextElement(DoublyElement nextElement) {
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188
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this.next = nextElement;
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189
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}
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190
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public DoublyElement getPreviousElement() {
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191
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return this.previous;
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192
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}
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193
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public void setPreviousElement(DoublyElement previousElement) {
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194
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this.previous = previousElement;
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195
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}public String toString() {
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196
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return this.data.toString();
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197
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}
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198
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}
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