Utility.h

/*
 * Utility.h
 *
 *  Created on: Jul 11, 2012
 *      Author: Yajia
 */

#ifndef UTILITY_H_
#define UTILITY_H_

#include <string.h>
#include <vector.h>
using namespace std;

#define PI 3.14159265

class Utility {
public:

//  static void print_Double2D( int m, int n, double** values, int start = 0, string name = "");

    static void matrix_multiply_trash( int m, int n, int p, double** val1, double** val2, double** res, double cov = 1);

    static void matrix_square_transposeA( int m, int n, double** A, double** res);

    static double** new_Double2D( int m, int n);

    static void delete_Double2D( double** values, int m);

    static void setZero_Double2D( int m, int n, double** values);

//  static void print_vector( vector<double>& v, string delim = " ");

//  static void record_vector( vector<double>& v, string filename, string delim = "\n");

//  static string itoa( const int& i);

    static double dist( const vector<double>& a, const vector<double>& b, const int minsize);

};

class StringTokenizer{
public:
    StringTokenizer( string s, string delims = "\t\n ");

    string nextToken();

    bool hasMoreTokens() const;

    void getAllTokens( vector<string>& tokens);
private:
    string s;
    vector<char> delims;
    int index;
};

class String {
public:
    static string toUpper( const string&);
    static string toLower( const string&);
};


class Debug {
public:
    static void check( const bool assertion, string comment);
};

class Random
{
public:
    static int nextInt( const int r);

    static int nextInt( const int r1, const int r2);

    static double nextDouble( const double range);

    static double nextDouble( const double r1, const double r2);

    static double nextNormal();

    static double nextNormal( const double mean, const double std);
};


class BinarySearch {
public:
    static int search( const vector<double>& dataset, const double& v);
private:

    static int search( const vector<double>& dataset, const double& v, const int s, const int e);
};

#endif /* UTILITY_H_ */