public void SetNext(BiDirNode <T> next) { this.next = next; }
public BiDirNode(T value, BiDirNode <T> prev, BiDirNode <T> next) { this.prev = prev; this.next = next; this.value = value; }
public void SetPrev(BiDirNode <T> prev) { this.prev = prev; }
public BiDirNode(T value) { prev = null; next = null; this.value = value; }