Java Program to sort Names in an alphabetical order.

    Example:  input- 4
                    happy lucky abhay sibu
              output-abhay happy lucky sibu
 
    Example 2: input- 4 
                     arjun hapi babai lucky
               output-arjun babai hapi lucky 

Answer :

 public class SortNames
 {

  public static void main(String[] args) 
  {
        Scanner sc=new Scanner(System.in);
        System.out.println();
        
        int num=sc.nextInt();// how many names you want to sort 

        String[] s=new String[num];

        for(int i=0;i<(num);i++)
        {
           s[i]=sc.next();
        }

       int len=s.length;

       for(int i=0;i<(len);i++)
       {
          String temp;
          for(int j=0;j0)
              {
                  temp=s[j];
                  s[j]=s[j+1];
                  s[j+1]=temp;
              }
          }
       }

       for(String m:s)
       {
          System.out.print(m+" ");
       }
  }

 }

Java program to remove duplicate character from a String

    Example: input-aabcdefsdd
             output-abcdefs
    Example2:input-feedback
             output-fedback

Answer :

public class Pattern5 
{

 public static void main(String[] args) 
 {
   Scanner sc=new Scanner(System.in);
   System.out.println("Enter the String");
    String s=sc.next();
  
     String[] nt=s.split("");
     String result=nt[0];
  
     for(int i=0;i<(nt.length);i++)
     {
        if(!result.contains(nt[i]))
        {
            result=result+nt[i];
        }
   
     }
     System.out.println(result);
 }

}

Java Program to swap first and last word of a Sentence

Answer :

import java.util.Scanner;

public class StringWordSwap {

 public static void main(String[] args) {
 
  
  Scanner scan=new Scanner(System.in);
  System.out.println("Enter the String :");
  String s=scan.nextLine();
  String[] ori=s.split(" ");
//split method return type is array type. Example-if input is "give your best performance"
                          //after split method ori[]={"give","your","best","performance"};
  String temp=ori[0];                    
  
  ori[0]=ori[ori.length-1]; //"performance" will store at ori[0]
  
   ori[ori.length-1]=temp;//"give" will store at last index    
  
  for(int i=0;i<(ori.length);i++){
   System.out.print(ori[i]+" ");
  }

 }
}

Example:
 input:give your best performance
 ouput:performance your best give