i have to write five methods... i have tried to write the first 2but they are wr

Question

i have to write five methods... i have tried to write the first 2but they are wrong... please help... i'll also attach a testprogram for it.....

// provide some interesting services

public class Analyze {

// doubled(): returns whether the first half of stringparameter s is the
// same as the second half
public static boolean doubled( String s ) {
   int n = s.length();
   int x = 0;
   int y = n;
   while ( n / 2 > 0 ){
      if ( s.charAt (x) == s.charAt (y/2 +x) ){
      }
      else{
        return false;
      }
   n = n - 2;
   }
   x++;
   return true;
}

// aPallindrome(): reports whether string parameter s is thesame sequence
// of characters forwards and backwards
public static boolean aPallindrome( String s ) {
   int n = s.length();
   int x = 0;
   int y = n;
   while ( n / 2 > 0 ){
      if ( s.charAt (x) == s.charAt (y - 1- x) ){
      }
      else{
        return false;
      }
   n = n - 2;
   }
   x++;
   return true;
}

// deTab(): returns a new string similar to string parameters, but with
// tab characters replaced by blanks.

// dePunct(): returns a new string similar to stringparameter s, but with
// punctuation characters replaced by blanks

// monospace(): returns a new string similar to stringparameter s, but with
// sequences of blanks replaced by a single blank.
}


the test program is.... it is correct


// provide some interesting services

import java.util.*;

public class TestAnalyze {

public static void main( String[] args ) {

Scanner stdin = new Scanner( System.in );

System.out.print(" Enter a string: " );
String input1 = stdin.nextLine();
boolean b1 = Analyze.doubled( input1 );
System.out.println( "Is " + input1 + " doubled: " + b1);

System.out.print(" Enter a string: " );
String input2 = stdin.nextLine();
boolean b2 = Analyze.aPallindrome( input2 );
System.out.println( "Is " + input2 + " a pallindrome: " + b2);

System.out.print(" Enter a line of text: " );
String input3 = stdin.nextLine();
String out3 = Analyze.deTab( input3 );
System.out.println( input3 + " after detabbing: " + out3);

System.out.print(" Enter a line of text: " );
String input4 = stdin.nextLine();
String out4 = Analyze.dePunct( input4 );
System.out.println( input4 + " after stripping punctuation:" + out4 );

System.out.print(" Enter a line of text: " );
String input5 = stdin.nextLine();
String out5 = Analyze.monospace( input5 );
System.out.println( input5 + " after trimming blanks: " +out5 );

}
}

Explanation / Answer

//Here is the correctedmethods.. public static boolean doubled( String s ) {    int n = s.length();    int x = 0;    if(n%2 !=0)         //must be even    return false;    for(x=0;x

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