Lab03 - POO

package Lab03;

/**
 *
 * @author Nan Mihai
 */
public class IntSet {
    int v[];
    int nr;

    public IntSet(int n) {
        this.v = new int[n];
        this.nr = 0;
    }

    public boolean contains(int x) {
        IntSet set = this;
        for(int i = 0; i < set.nr; i++) {
            if(set.v[i] == x) {
                return true;
            }
        }
        return false;
    }

    public void add(int x) {
        IntSet set = this;
        if(!set.contains(x)) {
            v[nr] = x;
            nr++;
        }
    }

    public String toString() {
        IntSet set = this;
        String s = "";
        for(int i = 0; i < set.nr; i++) {
            s += set.v[i] + " ";
        }
        s += "\n";
        return s;
    }
}