java-projects/phonebook/PhoneBook.java

86 lines
2.3 KiB
Java

/*
*
* Matt Jensen
* CS 145, Spring 2019
* Assignment X
* 5/15/19
*
*/
// stores telephone nodes
import java.util.*;
public class PhoneBook {
private String name;
private TelephoneNode front;
private TelephoneNode back;
private int size;
public PhoneBook( String name ) {
this.name = name;
this.size = 0;
}
public void add(TelephoneNode node) {
this.add(this.size, node);
}
public void add( int index, TelephoneNode node ) {
if( index == 0 ) {
node.next = this.front;
this.front = node;
} else {
TelephoneNode nodeBeforeIndex = this.get( index - 1 );
//TelephoneNode nodeAtIndex = this.get( index );
//node.next = nodeAtIndex.next;
nodeBeforeIndex.next = node;
}
this.size++;
}
public TelephoneNode get(int index) {
TelephoneNode currentNode = this.front;
for( int i = 0; i < index; i++) {
currentNode = currentNode.next;
}
return currentNode; // change back.next from null to node
}
public int search(String name) {
TelephoneNode currentNode = this.front;
name = name.toLowerCase();
String nodeName;
for( int i = 0; i < this.size; i++) {
nodeName = currentNode.getName().toLowerCase();
if(nodeName.indexOf(name) >= 0) {
return i;
}
currentNode = currentNode.next;
}
return -1;
}
public void transfer(int index, PhoneBook destination){
TelephoneNode node = this.get(index);
this.remove(index);
destination.add(node);
}
public void remove(int index) {
if( index == 0 ) {
this.front = this.front.next;
} else {
TelephoneNode nodeBeforeIndex = this.get( index - 1 );
TelephoneNode nodeAtIndex = this.get( index );
nodeBeforeIndex.next = nodeAtIndex.next;
}
}
public String getName() {
return this.name;
}
public String toString() {
String string = this.getName() + "\n";
TelephoneNode currentNode = this.front;
while( currentNode != null ) {
string += currentNode.toString() + "\n";
currentNode = currentNode.next;
}
return string;
}
}