Write a program to input a word from the user and remove the duplicate characters present in it.
// Java program to remove duplicate/repeated characters from a string www.getprogramcode.com
import java.util.*;
class RemoveDuplicate
{
public static void main(String args[])
{
String s,ans="";
char ch ;
int l,i=0;
Scanner sc=new Scanner(System.in);
System.out.print("Enter any string: "); // Inputting the word
s = sc.nextLine();
l=s.length();
s+=" "; // *Adding extra space at the end because last character is compared with something else index out of bound error.
ch=s.charAt(0); // taking ch as first character
while(i<l)
{
ans= ans+ ch; // adding each individual character to the answer string or output string without repeated characters
while(s.charAt(++i)==ch && i<l)
{}
ch=s.charAt(i); // **to store the previously last character in ch
}
System.out.println("String after removing repeated characters : \n"+ans); // Printing the string without duplicate characters
}
}