public boolean remove(Object o) {
if (Entry.elementName.equals(o)) {
for (Entry entry : treeList) {
if (entry.equals(o)) {
if (!entry.availableToAddRightChildren) {
treeList.remove(entry.rightChild.elementName);
}
if (!entry.availableToAddLeftChildren) {
treeList.remove(entry.leftChild.elementName);
}
}
}
treeList.remove(o);
return true;
} else {
throw new UnsupportedOperationException();
}
}
package com.javarush.task.task20.task2028;
import java.util.List;
public class Solution {
public static void main(String[] args) {
List<String> list = new CustomTree();
for (int i = 1; i < 16; i++) {
list.add(String.valueOf(i));
}
System.out.println("The list size is " + list.size());
System.out.println("The expected parent is 3. The actual parent is " + ((CustomTree) list).getParent("8"));
System.out.println("The expected parent is null. The actual parent is " + ((CustomTree) list).getParent("20"));
list.remove("3");
System.out.println("The expected parent is null. The actual parent is " + ((CustomTree) list).getParent("8"));
list.add("16");
System.out.println("The expected parent is 9. The actual parent is " + ((CustomTree) list).getParent("16"));
list.remove("4");
list.remove("5");
list.remove("6");
System.out.println("Expected: true. Actual: " + list.add("20"));
System.out.println("The expected parent is 1. The actual parent is " + ((CustomTree) list).getParent("20"));
}
}