Classes Homework

first attempt (ian wu literally (probably) saw me code half of this in front of his eyes in class)

public class SingleTable {
    public int getNumSeats() {}
    public int getHeight() {}   
    public double getViewQuality() {}
    public void setViewQuality(double value) {}
}

public class CombinedTable {
    public SingleTable t1;
    public SingleTable t2;
    public CombinedTable(SingleTable t1, SingleTable t2) {
        this.t1 = t1;
        this.t2 = t2;
    }

    public boolean canSeat(int n) {
        // can seat customers 2 less than total
        // if number of people is greater than 2 less than the total, you cant seat them
        // -> return false
        // else return true
        if (n>(t1.getNumSeats()+t2.getNumSeats()-2)) {
            return false;
        }
        else {
            return true;
        }
    }
    
    public double getDesireability(SingleTable t1, SingleTable t2) {
        if (t1.getHeight() != t2.getHeight()) {
            // if the heights are not the same, desireability is 10 less than the avg
            return (t1.getViewQuality() + t2.getViewQuality())/2 - 10;
        }

        else {
            // if the heights are the same, (not !=) desireability is the average of the two
            return (t1.getViewQuality()+t2.getViewQuality())/2;
        }
    }
}

SCORING

1. declares class header and constructor w/ parameters, constructor not private: yes
2. declares appropriate private instance variables including at least two SingleTable references: no
3. constructor initializes instance variables using parameters: yes
4. declares header public boolean canseat(int _): yes
5. calls getNumSeats and returns true if and only if sum of two tables -2 >= n: yes, because i checked for the opposite condition to return false, x>y returns false is the same as y >= x returns true (i think?)
6. declares header public double getDesirability(): technically no (idk if they will care about a spelling error but apparently i dont know how to spell desirability)
7. calls getHeight and getViewQuality on SingleTable objects: yes, calling them on t1 and t2
8. getDesirability computes average of constituent tables’ views desirabilities: yes

total score: 7/9, maybe probably could be 8 if they dont count my bad spelling

self notes:

• make a habit of using private instance variables, it is good practice for both general coding and CB
• read the question carefully to not make spelling errors

code rewrite:

public class SingleTable {
    public int getNumSeats() {}
    public int getHeight() {}
    public double getViewQuality() {}
    public void setViewQuality(double value) {}
}

public class CombinedTable {
    // private
    private SingleTable t1;
    private SingleTable t2;
    public CombinedTable(SingleTable t1, SingleTable t2) {
        this.t1 = t1;
        this.t2 = t2;
    }

    public boolean canSeat(int n) {
        if (n>(t1.getNumSeats()+t2.getNumSeats()-2)) {
            return false;
        }
        else {
            return true;
        }
    }
    
    public double getDesirability(SingleTable t1, SingleTable t2) {
        // fixed spelling
        if (t1.getHeight() != t2.getHeight()) {
            return (t1.getViewQuality() + t2.getViewQuality())/2 - 10;
        }

        else {
            return (t1.getViewQuality()+t2.getViewQuality())/2;
        }
    }
}