bool isTrue(string);
bool isContainingOnlyDigits(string);
bool isNumeric1(string);
+ string findEdianness();
//string manipulation
map<string, vector<string> > parseClasses(string);
//math operation
+ double max(vector<double>&); //returns largest value in vector
+ double min(vector<double>&); //returns smallest value in vector
int factorial(int num);
vector<vector<double> > binomial(int);
float ceilDist(float, int);
float roundDist(float, int);
unsigned int fromBase36(string);
+ double median(vector<double>);
int getRandomIndex(int); //highest
double getStandardDeviation(vector<int>&);
vector<double> getStandardDeviation(vector< vector<double> >&);