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[Resolvido] Duvida Insertion Sort

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Eu estou aplicar o algoritmo Insertion Sort em listas ligadas e esta a funcionar, mas surgiu me uma duvida.

 public static boolean InsertionSort(ListaLigada lista) {

	int j, i;
	No percorrer = lista.getHead().getNext();

	for (j = 1; j < lista.getNelementos() - 1; j++) {
		int valor=percorrer.getElement();
		i = j - 1;
		No tmp;

		while ((i >= 0) && percorrer.getElement() < (tmp = lista.getNoByPosition(i)).getElement()) {


			// tmp.setElement(percorrer.getElement());// se usar isto nao funciona
			//o valor de pecorrer e alterado nao percebo porque
			// eu ja fiz debug e ele e alterado por causa disto tmp.getNext().setElement(tmp.getElement());



		percorrer = percorrer.getNext();

	return true;

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