47 lines
1.1 KiB
Plaintext
47 lines
1.1 KiB
Plaintext
public void eliminar(String llave) {
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HashItem hashItem = new HashItem(llave, 0);
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int hashIndice = hash(hashItem.getLlave());
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int i = 0;
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// Buscar hasta que encuentra la llave.
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while (hashArray[hashIndice] != null && hashArray[hashIndice].getLlave() != null && i < tamano) {
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if (hashArray[hashIndice].getLlave().equals(llave)) {
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// Encontró la llave, borrarla.
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hashArray[hashIndice] = null;
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return;
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}
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hashIndice++;
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hashIndice = hashIndice % tamano;
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i++;
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}
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}
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public int hash(String string) {
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// Multiplicar por un numero primo(31) para generar mejor hashes.
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int hash = 31;
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for (int i = 0; i < string.length(); i++) {
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// Suma usando cada char del string.
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hash = hash * 31 + string.charAt(i);
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}
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if (hash < 0) {
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hash = hash * - 1;
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}
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return hash % tamano;
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}
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public class HashItem {
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final private String llave;
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final private int valor;
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public HashItem(String llave, int valor) {
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this.llave = llave;
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this.valor = valor;
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}
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public String getLlave() {
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return llave;
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}
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public int getValor() {
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return valor;
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}
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} |