public boolean simulate(){
int distance=0;
int numHops=0;
//hopDistance() tells us how far teh frog hops

//if frog reaches target numsteps<maxSteps

//if goal reached or passed stop hopipng, if position is negative stop hopping if frog reaches max steps stop hopping

while(distance<goalDistance&&distance>=0&&numSteps<maxHops){
    distance+=hopDistance();
    numHops++;
}

if(distance>=goalDistance){
    return true;
}
return false;
}


public class RandomStringChooser{
    private String[] words;
    private ArrayList<String> randomWords;

    pbulic RandomStringChooser(String[] arr){
        words=arr;
        randomWords=new ArrayList<>();
        makeCopy();
    }

    public String getNext(){
        if(randomWords.size()>0){
            return randomWords.remove((int)(Math.random()*randomWords.size()));
        }
        else{
            return "NONE";
        }
    }

    private void makeCopy(){
        for(String s: words){
            randomWords.add(s);
        }
    }

}

public class HiddenWord{
    private String word;

    public HiddenWord(String s){
        word=s;
    }

    public String getHint(String guess){
    String hint="";
        for(int i=0; i<guess.length();i++){
            String ch=guess.substring(i, i+1);
            if(word.indexOf(ch)>=0){
                if(word.indexOf(ch)==i){
                    hint+=ch;
                }
                else{
                    hint+="+";
                }
            }
            else{
                hint+="*";
            }
        }
    }
}


public interface NumberGroup{
    boolean contains(int n);
}

public class Range impliments NumberGroup{
    private int min, max;

    public Range(int min, int max){
        this.min=min;
        this.max=max;
    }

    public boolean contains(int n){
        return n>=min&&n<=max;
    }
}
@Override
public boolean contains(int n){
    boolean containsN=false;
    for(NumberGroup g: groupList){
        if(g.contains(n)){
            return true;
        }
    }

    return false;
}


public int getValueAt(int r, int c){

    for(SparseArrayEntry e: entries){
        if(e.getRow()==r&&e.getCol()==c){
            return e.getValue();
        }
    }
    return 0;

}

public void removeColumn(int c){
    for(int i=0; i<entries.size(); i++){
        if(entries.get(i).getCol()==c){
            entries.remove(i);
            i--;
        }
        else if(entries.get(i).getCol()>c){
            entries.set(i, new SparseArrayEntry(entries.get(i).getRow,
                                                entries.get(i).getCol-1));
        }
    }
    numCols--;

}