Mateus - Interview

gistfile1.txt

public static Main(ArrayList<Transactions> transactions){
    HashMap<String, ArrayList<Transactions>> hashMap = new HashMat<>();
    for(Transaction transaction : transactions){
        if(hashMap.get(transaction.hashCode()) == null){
            ArrayList<Transaction> arrayList = new ArrayList();
            arrayList.add(transaction);
            hashMap.put(transaction.hashCode(), arrayList);
        }else{
            arrayList = hashMap.get(hashCode());
            arrayList.add(transaction);
        }
    }

    Iterable iterable = hashMap.iterable();
    ArrayList<ArrayList<Transaction>> result = new ArrayList<>();
    while(iterable.hasNext()){
        result.add(iterable.next);
    }

    return result;
}

public class Transaction(){
    private int id;
    private String sourceAccount;
    private String targetAccount;
    private int amount;
    private String category;
    private String time;

    public Transaction(){}

    //getters and setters

    public boolean equals(Transaction t){
        if(this.sourceAccount == t.getSourceAccount() 
        && this.targetAccount == t.getSourceAccount()
        && this.ammount == t.getAmmount() 
        && this.category == t.getCategory()
        && (Math.mod(this.time) - Math.mod(t.getTime()) < 60)){
            return true;
        }
        return false;
    }

    public String hashCode(){
        return this.sourceAccount().toString() + this.targetAccount().toString() + this.ammount().toString() + this.category().toString();
    }

}