dietas para adelgazar font: normal normal 13px Arial, Tahoma, Helvetica, FreeSans, sans-serif; color: #ffffff; background: #000000 url(http://www.blogblog.com/1kt/awesomeinc/body_background_dark.png) repeat scroll top left; } html body .content-outer { min-width: 0; max-width: 100%; width: 100%; } a:link { text-decoration: none; color: #888888; } a:visited { text-decoration: none; color: #444444; } a:hover { text-decoration: underline; color: #cccccc; } .body-fauxcolumn-outer .cap-top { position: absolute; z-index: 1; height: 276px; width: 100%; background: transparent url(http://www.blogblog.com/1kt/awesomeinc/body_gradient_dark.png) repeat-x scroll top left; _background-image: none; } /* Columns ----------------------------------------------- */ .content-inner { padding: 0; } .header-inner .section { margin: 0 16px; } .tabs-inner .section { margin: 0 16px; } .main-inner { padding-top: 30px; } .main-inner .column-center-inner, .main-inner .column-left-inner, .main-inner .column-right-inner { padding: 0 5px; } *+html body .main-inner .column-center-inner { margin-top: -30px; } #layout .main-inner .column-center-inner { margin-top: 0; } /* Header ----------------------------------------------- */ .header-outer { margin: 0 0 0 0; background: transparent none repeat scroll 0 0; } .Header h1 { font: normal bold 40px Arial, Tahoma, Helvetica, FreeSans, sans-serif; color: #ffffff; text-shadow: 0 0 -1px #000000; } .Header h1 a { color: #ffffff; } .Header .description { font: normal normal 14px Arial, Tahoma, Helvetica, FreeSans, sans-serif; color: #ffffff; } .header-inner .Header .titlewrapper, .header-inner .Header .descriptionwrapper { padding-left: 0; padding-right: 0; margin-bottom: 0; } .header-inner .Header .titlewrapper { padding-top: 22px; } /* Tabs ----------------------------------------------- */ .tabs-outer { overflow: hidden; position: relative; background: #141414 none repeat scroll 0 0; } #layout .tabs-outer { overflow: visible; } .tabs-cap-top, .tabs-cap-bottom { position: absolute; 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} .main-inner .widget ul li:last-child, .main-inner .widget #ArchiveList ul.flat li:last-child { border-bottom: none; } .post-body { position: relative; } .main-inner .widget .post-body ul { padding: 0 2.5em; margin: .5em 0; list-style: disc; } .main-inner .widget .post-body ul li { padding: 0.25em 0; margin-bottom: .25em; color: #ffffff; border: none; } .footer-inner .widget ul { padding: 0; list-style: none; } .widget .zippy { color: #666666; } /* Posts ----------------------------------------------- */ body .main-inner .Blog { padding: 0; margin-bottom: 1em; background-color: transparent; border: none; -moz-box-shadow: 0 0 0 rgba(0, 0, 0, 0); -webkit-box-shadow: 0 0 0 rgba(0, 0, 0, 0); -goog-ms-box-shadow: 0 0 0 rgba(0, 0, 0, 0); box-shadow: 0 0 0 rgba(0, 0, 0, 0); } .main-inner .section:last-child .Blog:last-child { padding: 0; margin-bottom: 1em; } .main-inner .widget h2.date-header { margin: 0 -15px 1px; padding: 0 0 0 0; font: normal normal 14px Arial, Tahoma, Helvetica, FreeSans, sans-serif; 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-goog-ms-border-top-right-radius: 0; border-top-left-radius: 0; border-top-right-radius-topright: 0; margin-top: 1em; } .blog-feeds, .post-feeds { margin: 1em 0; text-align: center; color: #ffffff; } .blog-feeds a, .post-feeds a { color: #888888; } .blog-feeds a:visited, .post-feeds a:visited { color: #444444; } .blog-feeds a:hover, .post-feeds a:hover { color: #cccccc; } .post-outer .comments { margin-top: 2em; } /* Footer ----------------------------------------------- */ .footer-outer { margin: -0 0 -1px; padding: 0 0 0; color: #ffffff; overflow: hidden; } .footer-fauxborder-left { border-top: 1px solid #222222; background: #141414 none repeat scroll 0 0; -moz-box-shadow: 0 0 0 rgba(0, 0, 0, .2); -webkit-box-shadow: 0 0 0 rgba(0, 0, 0, .2); -goog-ms-box-shadow: 0 0 0 rgba(0, 0, 0, .2); box-shadow: 0 0 0 rgba(0, 0, 0, .2); margin: 0 -0; } /* Mobile ----------------------------------------------- */ *+html body.mobile .main-inner .column-center-inner { margin-top: 0; } .mobile .main-inner { padding-top: 0; } .mobile .main-inner .widget { padding: 0 0 15px; } .mobile .main-inner .widget h2 + div, .mobile .footer-inner .widget h2 + div { border-top: none; padding-top: 0; } .mobile .footer-inner .widget h2 { padding: 0.5em 0; border-bottom: none; } .mobile .main-inner .widget .widget-content { margin: 0; padding: 7px 0 0; } .mobile .main-inner .widget ul, .mobile .main-inner .widget #ArchiveList ul.flat { margin: 0 -15px 0; } .mobile .main-inner .widget h2.date-header { right: 0; } .mobile .date-header span { padding: 0.4em 0; } .mobile .date-outer:first-child { margin-bottom: 0; border: 1px solid #222222; -moz-border-radius-topleft: 0; -moz-border-radius-topright: 0; -webkit-border-top-left-radius: 0; -webkit-border-top-right-radius: 0; -goog-ms-border-top-left-radius: 0; -goog-ms-border-top-right-radius: 0; border-top-left-radius: 0; border-top-right-radius: 0; } .mobile .date-outer { margin: 0; padding: 10px; border-color: #222222; border-width: 0 1px 1px; } .mobile .date-outer:last-child { margin-bottom: 0; } .mobile .main-inner { padding: 20px 10px; } .mobile .header-inner .section { margin: 0; } .mobile .tabs-inner .section { margin: 0 10px; } .mobile .main-inner .widget h2 { margin: 0; padding: 0; } .mobile .main-inner .widget h2.date-header span { padding: 0 10px; } .mobile .main-inner .widget .widget-content { margin: 0; padding: 7px 0 0; } .mobile .main-inner .column-center-inner, .mobile .main-inner .column-left-inner, .mobile .main-inner .column-right-inner { padding: 0; } .mobile .main-inner .column-left-inner, .mobile .main-inner .column-right-inner { background: transparent none repeat 0 0; -moz-box-shadow: none; -webkit-box-shadow: none; -goog-ms-box-shadow: none; box-shadow: none; } .mobile .date-posts { margin: 0; padding: 0; } .mobile .post-outer { margin: 0; padding: 10px; } .mobile .footer-fauxborder-left { margin: 0; } .mobile .main-inner .section:last-child .Blog:last-child { margin-bottom: 0; } .mobile .mobile-link-button { background: #444444 none repeat-x scroll 0 -100px; } .mobile-link-button a:link, .mobile-link-button a:visited { color: #ffffff; } -->

sábado, 20 de noviembre de 2010

Ordenación por monticulos (Heap Sort) Java

El algoritmo de ordenación por monticulos o Heap Sort recorre el conjunto de elementos desde la posición de la mitad hasta la primera organizando el montículo correspondiete a dicho elemento. Una vez terminado este proceso, se inicia el proceso de ordenación ntercambiando el primer elemento por el último del arreglo y reorganizando el montículo a partir de la primera posición.
En el siguiente ejemplo si visualiza mejor el algoritmo de Heap Sort:

public static void ordenacion Monticulos (int[ ] v) {
.....final int N = v.length;
.....for (int nodo = N/2; nodo >=0; nodo--) hacerMonticulo (v, nodo, N-1);
.....for (int nodo = N-1; nodo >=0; nodo--) {
............int tmp = v[0];
............v[0] = v[nodo];
............v[nodo]= tmp;
............hacerMonticulo(v,0,nodo-1);
............}
...}

public static void hacerMonticulo (int [ ] v, int nodo, int fin) {
......int izq = 2*nodo 1;
......int der = izq 1;
......int may;
......if (izq>fin) return;
......if (der>fin) may=izq;
......else may = v[izq]>v [der]?izq:der;
......if (v[nodo] ..........int tmp = v[nodo];
...........v[nodo] = v[may];
...........v[may] = tmp;
..........hacerMonticulo (v,may, fin);
.........}
}

La complejidad del algoritmo de ordenación por montículos es O(n log n)teniendo en cuenta que el proceso de organizar el montículo en el peor caso solamente tiene que hacer intercambios sobre una sola línea de elementos desde la raíz del árbol hasta alguna de las hojas para un máximo de log n intercambios.

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