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ISC Program : Position deletion in a sentence

 WAP to accept  a sentence which may be terminated by

either , ; ? . or !(Any other character may be ignored).
The words may be separated by more than one blank space and are
in upper case.
Perform the following tasks:
(i) Accept the sentence and reduce all extra blank spaces between
two words to a single blank space.
(ii) Accept a word from the user which is a part of the sentence
along with its position number and delete the word and display the distance.
Example:
Input: AS YOU SOW,SO SO YOU REAP.
AS YOU SOW,SO SO YOU REAP
Word To be deleted : SO
Word position in the sentence: 4
Output: AS YOU SOW,SO YOU REAP

import java.util.*;
public class code
{
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        System.out.println("Enter a sentence:");
        String m = sc.nextLine();
        char ch = m.charAt(m.length()-1);
        m = m.substring(0,m.length()-1);
        if(".;?!".indexOf(ch)!=-1)
        {
            StringTokenizer st = new StringTokenizer(m);
            System.out.println("Enter the word you want to delete:");
            String word = sc.next().trim();
            System.out.println("Enter the position:");
            int pos = sc.nextInt();
            int c=0;
            String result=" ";
            while(st.hasMoreTokens())
            {
                String g=st.nextToken().trim();
                if(c==pos)
                {
                    result=result+"";
                }
                else{
                    result=result+g+" ";
                }
                c=c+1;
            }
            System.out.println("The required sentence: "+result);
        }
    }
}

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