Reversing characters in each word in a sentence - Stack Implementation

Question

This code is inside the main function:

Scanner input = new Scanner(System.in);

System.out.println(\"Type a sentence\");
String sentence = input         


        

Answer 1

import java.util.StringTokenizer;
public class stringWork {
public static void main(String[] args) {
    String s1 = "Hello World";
    s1 = reverseSentence(s1);
    System.out.println(s1);
    s1 = reverseWord(s1);
    System.out.println(s1);
}
private static String reverseSentence(String s1){
    String s2 = "";
    for(int i=s1.length()-1;i>=0;i--){
        s2 += s1.charAt(i);
    }
    return s2;
}
private static String reverseWord(String s1){
    String s2 = "";
    StringTokenizer st = new StringTokenizer(s1);
    while (st.hasMoreTokens()) {
        s2 += reverseSentence(st.nextToken());
        s2 += " ";
    }
    return s2;
}

}