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Thread: Syntax error hamming code

  1. #1
    Junior Member
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    Default Syntax error hamming code

    hey guys i did some code to do hamming and I have a syntax error in my code and I need to correct it and I don't know how to resolved this is my code

    import java.lang.Math;

    char [] GenerateSequence(int length)
    int[] numbers = new int[legnth];
    for (int i = 0; i < numbers.length; i++) {
    if (Math.random() > 0.5) {

    numbers[i] = 1;
    else
    numbers[i] = 0;
    }
    return numbers;
    }
    }

    char CalculateNbControlBits(int length){

    int nextpower2=1;
    int p=1;
    Nombredebit=0;
    for (int i = 0; i < numbers.length; i++) {
    {
    if(p == nextpower2)
    {
    Nombredebit++;

    nextpower2 = nextpower2 * 2;
    }

    p++;
    }

    return Nombredebit;
    }
    }


    void AddControlBits(char info[], int length, int nbControlBits)
    {
    for (int i = 0; (i < numbers.length()); i++) {
    if ((numbers[i] == -1)) {
    boolean impair = nbControlBits(numbers, (i + 1));
    if (pair) {
    numbers[i] = 0;
    }
    else {
    numbers[i] = 1;
    }

    }

    }

    return numbers;
    }

    void CalculateControlBits(char codeWord[], int length, int nbControlBits)
    {
    static int[] calculation(int codeword, int Nombredebit)

    for (int i = 0; i < Nombredebit; i++) {
    int x = (int)Math.pow(2, i);
    for (int j = 1; j < codeword.length; j++) {
    if (((j >> i) & 1) == 1) {
    if (x != j)
    codeword[x] = codeword[x] ^ codeword[j];
    }
    }

    }

    return codeword;

    }
    char [] GenerateErrorsInCodeWord (char codeWord[], int lengthCodeWord, double prob) {
    int[] lengthCodeWord = new int[legnth];

    for (int i = 0; i < numbers.length; i++) {
    if (Math.random() < prob) {
    lengthCodeWord++;
    if (numbers[i] == 0)
    numbers[i] = 1;
    else
    numbers[i] = 0;
    }

    return numbers;
    }
    }


    char [] CorrectCodeWord (char codeWord[], int lengthCodeWord)
    {
    int power2=1;
    int sum=0;
    while(power2 < numbers.length)
    {
    sum=sum+power2;
    power2=power2*2;
    }
    if(sum==0)

    System.out.println(" pas d erreur");
    else
    {

    System.out.println(" erreur dans "+sum);
    if(numbers[sum-1]==0)
    numbers[sum-1]=1;
    else
    numbers[sum-1]=0;
    }
    return numbers;
    }


    boolean CompareTwoSequence(char sequence1, char sequence2)
    {

    int Erreur = 0;

    if (sequence1[i] != sequence2[i])

    for(int i = 0; i < sequence1[i]; i++)
    {
    if(sequence1[i] != sequence2[i])
    {
    Erreur++;
    }
    }

    return Erreur;
    }
    }
    class numbers {

    public boolean VERBOSE = false;


    private int vecteur_information;

    private int vecteur_nbErreurs;

    private int vecteur_nbBitsControle;

    private int lengthTrames;


    public numbers(int pro_lengthTrames) {
    this.lengthTrames = pro_lengthTrames;
    this.vecteur_nbErreurs = new int ();
    this.vecteur_nbBitsControle = new List<int>();
    }


    public final void initialisnumbers(int nbBits) {
    this.vecteur_information = new List<int>();
    for (int i = 0; (i < nbBits); i++) {
    Random random = new Random();
    this.vecteur_information.Add(random.Next(0, 2));
    }

    }

    public final void miseEnTrames() {
    int nbTrames = (this.vecteur_information.Count() / this.lengthTrames);

    int longueurDerniereTrame = (this.vecteur_information.Count() % this.lengthTrames);
    int trameInformation;
    for (int i = 0; (i < nbTrames); i++) {
    trameInformation = this.vecteur_information.GetRange((i * this.lengthTrames), this.lengthTrames);
    this.pilote(trameInformation);
    }


    if ((longueurDerniereTrame != 0)) {a
    trameInformation = this.vecteur_information.GetRange((nbTrames * this.lengthTrames), longueurDerniereTrame);
    this.pilote(trameInformation);
    }

    }

    public final void pilote(int trameInformation) {
    int nbBitControl = 0;
    int nbErreurCan = 0;
    int nbErreurRecue = 0;
    int copieInformation = new int (trameInformation);

    Trame objTrame = new Trame();

    if (this.VERBOSE) {
    Console.Write("Trame information : ");
    Trame.afficherMessage(copieInformation);
    }


    int mesgEncode = objTrame.encodageHamming(copieInformation, ref nbBitControl);
    this.vecteur_nbBitsControle.Add(nbBitControl);
    if (this.VERBOSE) {
    Console.WriteLine(("Nb bit control : " + nbBitControl));
    Trame.afficherMessage(mesgEncode);
    }

    int mesgAvecControle = objTrame.ajouterBitDeControl(mesgEncode);
    if (this.VERBOSE) {
    Trame.afficherMessage(mesgAvecControle);
    }


    int mesgRecu = objTrame.passageCanal(mesgEncode, (1 / 25), ref nbErreurCan);
    if (this.VERBOSE) {
    Trame.afficherMessage(mesgRecu);
    System.out.println(("Nb Erreurs canal : " + nbErreursCan));
    }


    int mesgCorrige = objTrame.corrigerErreur(mesgRecu);
    if (this.VERBOSE) {
    Trame.afficherMessage(mesgCorrige);
    }


    int informationRecue = objTrame.extraireInformation(mesgCorrige);
    if (this.VERBOSE) {
    Trame.afficherMessage(informationRecue);
    }


    nbErreurRecue = objTrame.calculerNbErreurs(trameInformation, informationRecue);
    this.vec_nbErreurs.Add(nbErreursRecues);
    if (this.VERBOSE) {
    System.out.println(("Nb err entre trame recue et envoyee : " + nbErreursRecues));
    System.out.println(" ===================================== ");
    }

    }

    public final void calculeStat(int lengthTrames, int longueurMessage) {
    System.out.println(" =============== Statistiques ================ ");
    System.out.println(("Longueur des trames : " + this.lengthTrames));
    System.out.println("Vecteur du nb d\'erreurs : ");
    Trame.afficherMessage(this.vecteur_nbErreurs);
    System.out.println("Vecteur du nb de bits de controle : ");
    Trame.afficherMessage(this.vecteur_nbBitsControle) ;
    double moyenneErreurs = (this.vecteur_nbErreurs.Sum() / this.lengthTrames);
    double moyenneBitsControle = this.vecteur_nbBitControl.Average();
    System.out.println("Moyenne nb erreurs : ");
    System.out.println(moyenneErreurs);
    System.out.println("Moyenne nb de bits de controle : ");
    System.out.println(moyenneBitsControle);
    }
    }
    class Program {

    static void Main(string[] args) {
    int lengthTrames;
    int lengthnumbers= 3100;
    for (lengthTrames = 5; (lengthTrames
    < (lengthnumbers / 5)); lengthTrames += 5) {
    numbers objnumbers = new numbers(lengthTrames);
    objnumbers.initialisnumbers(1000);
    objnumbers.miseEnTrames();
    objnumbers.calculeStat(lengthTrames, lengthnumbers);
    }

    for (
    ; (lengthTrames < lengthnumbers); lengthTrames = (lengthTrames * 2)) {
    numbers objnumbers= new numbers(lengthTrames);
    objnumbers.initialisnumbers(1000);
    objnumbers.miseEnTrames();
    objnumbers.calculeStat(lengthTrames, lengthnumbers);
    }

    }
    }

  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Syntax error hamming code

    I have a syntax error
    Please copy the full text of the error message and paste it here. It has important info about the error.

    Please edit your post and wrap your code with code tags:

    [code]
    **YOUR CODE GOES HERE**
    [/code]

    to get highlighting and preserve formatting.

    http://www.java-forums.org/misc.php?do=bbcode#code
    If you don't understand my answer, don't ignore it, ask a question.

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