package week02;
import java.util.Random;
/**
 * This program class represents a coin.
 * @author Adrian Yadav
 * @version  : 0.1
 * @param
 *
 */


public class Coins{

    //variable declarlations
    /**
     * Boolean HEADS = true.
     */
    public static final boolean HEADS = true;
    /**
     * Boolean HEADS represented by TRUE.
     */
    public static final boolean TAILS = false;
    /**
     * String output.
     */
    public String output = "";
    /**
     * Boolean array coin.
     */

    /**
     * Boolean array.
     */

    private boolean[] coins;

    /**
     * Boolean array return coins.
     */

    private  boolean [] returnCoins;

    /**
     * this is the main method.
     * @param args not used
     *
     */

    public static void main(String[] args) {
        boolean[] b = {HEADS, TAILS, HEADS, HEADS, TAILS};
        Coins c = new Coins("HHTTTTTHHH");
    }

    /**
     *
     * Constructor class that uses a boolean array.
     * to make a coins object
     * @param coins -
     */

    public Coins(boolean[] coins) {
        this.coins = coins;
    }

    /**
     *
     * Constructor class that uses a string to make a coins object.
     * @param c -
     */


    public Coins(String c){
        int x = c.length();
        returnCoins = new boolean[x];
        for (int i = 0; i <  x; i++){
            if (c.charAt(i) == 'H' ){
                returnCoins[i] = HEADS;
            }   else{
                returnCoins[i] = TAILS;
            }

        }
        this.coins = returnCoins;

    }

    /**
     * Constructs a coins object with the.
     * specified length with random heads / tail values
     *  which are generated by the rand int method
     *@param length of the total / sides
     * */

    public Coins (int length){
        int i = 0;
        //1 = HEADS. 2 = TAILS
        returnCoins = new boolean[length];
        while (length > i){
            int r = randInt(1,2);
            for (int j = 0; j < length; j++){
                if (r == 1){
                    returnCoins[j] = true;
                }  else if ( r == 2){
                    returnCoins[j] = false;
                }
            }
            this.coins = returnCoins;

            i ++;
        }

    }
    /**
     *
     * Keeps track of Heads and Tails in the program.
     * @return H
     * */
    public int countHeads(){
        int h = 0;
        int t = 0;
        for (boolean a : coins){
            if (a){
                h++;
            }  else {
                t++;
            }
        }
        return h;
    }


    /**
     *
     * Returns a String consisting of H and T values.
     * which represent the heads and tail sides of each coin
     * @return output
     **/
    public String toString(){
        for (boolean c : coins){
            if (c){
                output += "H";
            } else{
                output += "T";
            }
        }
        return output;

    }

    /**
     * Counts "streaks" of Heads and Tails.
     * and provides a total
     *  @return int
     */
    public int countRuns(){
        int i=0;
        i+=1;
        return i;
    }

    /**
     * Returns a psuedo-random number between low and high, inclusive.
     *@return int
     *@param high - its a max value
     *@param low - its a min value
     */
    public static int randInt(int low, int high) {
        Random rand = new Random();
        int randomNum = rand.nextInt((high - low) + 1) + low;
        return randomNum;
    }

}



PASSED: countHeads_allHeads
PASSED: countHeads_allTails
PASSED: countHeads_multi
PASSED: toString_allHeads
PASSED: toString_allTails
PASSED: toString_multi
PASSED: constructor_length
PASSED: countRuns_one

FAILED: countRuns_multi
   expected [5] but found [1]


FAILED: constructor_string
   expected [HHTTHTHHHTTHTH] but found [HHTTHTH]