Sample Input : Applications
Sample Output : Aplictons
import java.io.*;
class A
{
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
String str1,str2="";
int i,j,len;
int arr[]=new int[26];
void take() throws Exception
{
System.out.print("\nEnter the sentence: ");
str1=br.readLine();
len=str1.length();
for(i=0;i<26;i++)
arr[i]=0;
for(i=0;i<len;i++)
{
char ch=str1.charAt(i);
char ch1=Character.toLowerCase(ch);
j=(int)ch1-97;
if(arr[j]==0)
{
arr[j]=1;
str2=str2+ch;
}
}
System.out.print("\nModified string = "+str2);
}
}
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