如何用java打印一棵树
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解决时间 2021-03-12 14:06
- 提问者网友：回忆在搜索
- 2021-03-11 17:58
如何用java打印一棵树
最佳答案
- 五星知识达人网友：风格不统一
- 2021-03-11 19:09
import java.util.LinkedList;
public class TreeNode {
String data;
TreeNode parent;
LinkedList<TreeNode> childlist;
TreeNode() {
data = null;
childlist = new LinkedList();
parent = null;
} //递归显示并打印一棵树
private static void displayTree(TreeNode f, int level) {
String preStr = ""; // 打印前缀
for (int i = 0; i < level; i++) {
preStr += " ";
} for (int i = 0; i < f.childlist.size(); i++) {
TreeNode t = f.childlist.get(i);
System.out.println(preStr + "-" + t.data); if (!t.childlist.isEmpty()) {
displayTree(t, level + 1);
}
}
}
}
public class TreeNode {
String data;
TreeNode parent;
LinkedList<TreeNode> childlist;
TreeNode() {
data = null;
childlist = new LinkedList();
parent = null;
} //递归显示并打印一棵树
private static void displayTree(TreeNode f, int level) {
String preStr = ""; // 打印前缀
for (int i = 0; i < level; i++) {
preStr += " ";
} for (int i = 0; i < f.childlist.size(); i++) {
TreeNode t = f.childlist.get(i);
System.out.println(preStr + "-" + t.data); if (!t.childlist.isEmpty()) {
displayTree(t, level + 1);
}
}
}
}
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