回答編集履歴
2
コード編集
test
CHANGED
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@@ -38,11 +38,15 @@
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38
38
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39
39
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40
40
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41
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-
public
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41
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+
public String indent() { return parent_ == null ? "" : parent_.indent() + " "; }
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42
42
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43
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-
System.out.println(name_);
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44
43
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44
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+
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45
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+
public void print() { if ( left() != null ) { System.out.print(indent()); left().print(); }
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46
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+
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47
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+
System.out.print(indent()); System.out.println(name_);
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48
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+
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45
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-
if ( right() != null ) right().print(); }
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49
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+
if ( right() != null ) { System.out.print(indent()); right().print(); } }
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46
50
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47
51
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48
52
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@@ -52,9 +56,9 @@
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52
56
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53
57
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54
58
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55
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-
root.setLeft(new BNode("left") )
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59
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+
root.setLeft( new BNode("left") )
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56
60
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57
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-
.setLeft( new BNode("left-left") )
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61
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+
.setLeft( new BNode("left-left") )
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58
62
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59
63
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.parent().setRight(new BNode("left-right"));
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60
64
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@@ -62,9 +66,9 @@
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62
66
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63
67
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root.setRight(new BNode("right"))
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64
68
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65
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-
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69
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+
.setRight(new BNode("right-right"))
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66
70
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67
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-
.parent().setLeft( new BNode("right-left")
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71
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+
.parent().setLeft( new BNode("right-left"));
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68
72
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69
73
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70
74
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1
コード修正
test
CHANGED
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@@ -12,9 +12,11 @@
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12
12
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13
13
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public class BNode {
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14
14
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15
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-
private BNode left_ = null;
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15
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+
private BNode left_ = null;
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16
16
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17
17
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private BNode right_ = null;
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18
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+
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19
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+
private BNode parent_ = null;
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18
20
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19
21
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20
22
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@@ -24,13 +26,15 @@
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24
26
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25
27
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public BNode(String name) { name_ = name; }
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26
28
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27
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-
public BNode right() { return right_; }
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29
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+
public BNode right() { return right_; }
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28
30
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29
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-
public BNode left() { return left_; }
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31
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+
public BNode left() { return left_; }
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30
32
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31
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-
public BNode
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33
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+
public BNode parent() { return parent_; }
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32
34
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35
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+
public BNode setRight(BNode node) { right_ = node; node.parent_ = this; return node; }
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36
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+
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33
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-
public BNode setLeft(BNode node) { left_ = node; return node; }
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37
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+
public BNode setLeft(BNode node) { left_ = node; node.parent_ = this; return node; }
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34
38
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35
39
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36
40
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@@ -46,9 +50,23 @@
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46
50
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47
51
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BNode root = new BNode("root");
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48
52
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49
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-
root.setLeft(new BNode("left")).setLeft(new BNode("left-left"));
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50
53
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54
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+
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55
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+
root.setLeft(new BNode("left") )
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56
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+
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57
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+
.setLeft( new BNode("left-left") )
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58
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+
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51
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-
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59
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+
.parent().setRight(new BNode("left-right"));
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60
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+
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61
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+
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62
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+
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63
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+
root.setRight(new BNode("right"))
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64
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+
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65
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+
.setRight(new BNode("right-right"))
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66
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+
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67
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+
.parent().setLeft( new BNode("right-left") );
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68
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+
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69
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+
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52
70
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53
71
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root.print();
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54
72
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