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shakila3 6 years ago
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f0b8feff5c
1 changed files with 40 additions and 0 deletions
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      PhoneBook.java

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PhoneBook.java View File

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+import java.util.List;
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+import java.util.ArrayList;
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+import java.util.TreeMap;
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+import java.util.Set;
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+import java.util.Iterator;
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+import java.util.Map;
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+import java.util.Collections;
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 /**
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  * Created by leon on 1/23/18.
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  */
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 public class PhoneBook {
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+    TreeMap<String,String> phoneMap = new TreeMap<String, String>();
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+    String name; 
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+    String phoneNumber;
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+    public PhoneBook(String name, String phoneNumber){
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+    //Constructor
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+    this.name = name;
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+    this.phoneNumber = phoneNumber;
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+    }
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+    
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+    public void add(String name, String phoneNumber){
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+        phoneMap.put(name, phoneNumber);
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+    }
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+    
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+    public void remove(String name){
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+     phoneMap.remove(name); 
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+    }
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+    
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+    public String lookup(String name){
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+     return phoneMap.get(name); 
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+    }
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+    
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+    public String reverseLookup(String phoneNumber){
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+      return phoneMap.get(phoneNumber);
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+    }
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+    
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+    public String display(){
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+        String resultString = "";
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+        for(String e : phoneMap.keySet()){
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+            String v = phoneMap.get(e);
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+            resultString = resultString + e + " -> " + v + "\n";
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+    }
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+    return resultString;
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+}
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 }