Write a programme to accept a word and display the alphabets in an alphabetical order.
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11-06-2018    2437 times
Java alphabets order

Write a programme to accept a word and display the alphabets in an alphabetical order.

First of all we convert the string into lower case. Now as we know, String is not a mutable, we convert the string into a StringBuffer Object. Now easily use the selection sort method on the StringBuffer object. Here we use a method setCharAt(), which is in the StringBuffer class but not in String Class.

import java.util.*;
public class AlphaSort
{
    public static void main(String []args)
    {
        Scanner sc=new Scanner(System.in);
        System.out.print("Enter A String : ");
        String str=sc.nextLine();
        str=str.toLowerCase();
        StringBuffer sb=new StringBuffer(str);
        char c;
        for(int i=0;i<sb.length();i++)
        {
            for(int j=0;j<sb.length();j++)
            {
                if(sb.charAt(i)<sb.charAt(j))
                {
                    c=sb.charAt(i);
                    sb.setCharAt(i,sb.charAt(j));
                    sb.setCharAt(j,c);
                }
            }
        }
        System.out.println(sb.toString().trim());
    }
}

Output

Enter A String : national Public school
aabcchiillnnooopstul

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Arnab De
I have over 16 years of experience working as an IT professional, ranging from teaching at my own institute to being a computer faculty at different leading institute across Kolkata. I also work as a web developer and designer, having worked for renowned companies and brand. Through tutorialathome, I wish to share my years of knowledge with the readers.
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