import java.util.*; public class Demo{ public static void main(String args[]){ TreeMap<Integer,String> m = new TreeMap<Integer,String>(); m.put(1,"India"); m.put(2,"US"); m.put(3,"Australia"); m.put(4,"Netherlands"); m.put(5,"Canada"); System.out.println("TreeMap Elements = "+m); System.out.println("Removing First Entry : "+m.pollFirstEntry()); System.out.println("Updated TreeMap Elements = "+m); } }
import java.util.*; public class Demo { public static void main(String args[]){ TreeMap<Integer,String> m = new TreeMap<Integer,String>(); m.put(1,"India"); m.put(2,"US"); m.put(3,"Australia"); m.put(4,"Netherlands"); m.put(5,"Canada"); System.out.println("TreeMap Elements = "+m); // removing a key associated with a given value System.out.println("Key removed? "+m.remove(3, "Australia")); System.out.println("Updated TreeMap Elements = "+m); } }
import java.util.*; public class Demo{ public static void main(String args[]){ TreeMap<Integer,String> m = new TreeMap<Integer,String>(); m.put(1,"India"); m.put(2,"US"); m.put(3,"Australia"); m.put(4,"Netherlands"); m.put(5,"Canada"); System.out.println("TreeMap Elements = "+m); System.out.println("Removing a Key = "+m.remove(3)); System.out.println("Updated TreeMap Elements = "+m); } }
import java.util.*; public class Demo{ public static void main(String args[]){ TreeMap<Integer,String> m = new TreeMap<Integer,String>(); m.put(1,"India"); m.put(2,"US"); m.put(3,"Australia"); m.put(4,"Netherlands"); m.put(5,"Canada"); for(Map.Entry e:m.entrySet()){ System.out.println(e.getKey()+" "+e.getValue()); } } }
import java.util.*; public class Demo{ public static void main(String args[]){ TreeMap<Integer,String> m = new TreeMap<Integer,String>(); m.put(1,"PHP"); m.put(2,"jQuery"); m.put(3,"JavaScript"); m.put(4,"Ruby"); m.put(5,"Java"); m.put(6,"AngularJS"); m.put(7,"ExpressJS"); System.out.println("TreeMap Elements..."); Collection res = m.values(); Iterator i = res.iterator(); while (i.hasNext()){ System.out.println(i.next()); } System.out.println("TreeMap size = "+m.size()); // Remove an element Object ob = m.remove(5); System.out.println("\nTreeMap after removing a single element...\n "+m); System.out.println("Size of TreeMap now = "+m.size()); } }
import java.util.*; public class Demo{ public static void main(String args[]){ TreeMap<Integer,String> m = new TreeMap<Integer,String>(); m.put(1,"PHP"); m.put(2,"jQuery"); m.put(3,"JavaScript"); m.put(4,"Ruby"); m.put(5,"Java"); m.put(6,"AngularJS"); m.put(7,"ExpressJS"); System.out.println("TreeMap Elements...\n"+m); System.out.println("\nSize of TreeMap: " + m.size()); } }
import java.util.*; public class Demo{ public static void main(String args[]){ TreeMap<Integer,String> m = new TreeMap<Integer,String>(); m.put(1,"PHP"); m.put(2,"jQuery"); m.put(3,"JavaScript"); m.put(4,"Ruby"); m.put(5,"Java"); m.put(6,"AngularJS"); m.put(7,"ExpressJS"); System.out.println("TreeMap Elements...\n"+m); System.out.println("Highest key in TreeMap: " + m.lastKey()); } }
import java.util.LinkedList; public class Demo { public static void main(String[] args) { LinkedList<String> l = new LinkedList<String>(); l.add("Andy"); l.add("Sara"); l.add("James"); l.add("Betty"); l.add("Bruce"); System.out.println("The last element of the Linked List is : " + l.getLast()); } }
import java.util.LinkedList; public class Demo { public static void main(String[] args) { LinkedList<String> l = new LinkedList<String>(); l.add("Apple"); l.add("Mango"); l.add("Pear"); l.add("Orange"); l.add("Guava"); System.out.println("The LinkedList is: " + l); l.removeFirst(); l.removeLast(); System.out.println("The LinkedList is: " + l); } }
import java.util.LinkedList; public class Demo { public static void main(String[] args) { LinkedList<String> l = new LinkedList<String>(); l.add("Apple"); l.add("Mango"); l.add("Pear"); System.out.println("The LinkedList is: " + l); l.addFirst("Orange"); l.addLast("Guava"); System.out.println("The LinkedList is: " + l); } }
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