if (!this.contains(o)) {
            return false;
        }

        int i = 0;
        while(!o.equals(this.data[i])) {
            i++;
        }

        while(i < this.data.length) {
            if (i == this.data.length-1) {
                this.data[i] = null;
            } else {
                this.data[i] = this.data[i+1];
            }
            i++;
        }

        this.size--;
        return true;