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Home >Java > Array ricerca sequenziale
//file SupArray.java // Classe di servizio SupArray // il file compilato SupArray.class deve essere pertanto // collocato all'interno del CLASSPATH //in %CLASSPATH%/demo/myarray package demo.myarray; import java.util.Random; public class SupArray { private static Random random = new Random(); public static int load(int start, int range) { return random.nextInt(range) + start; } public static void load(int[] a, int start, int range) { int n=a.length; for (int i = 0;i<n;i++) a[i] = random.nextInt(range) + start; } public static void print(int[] a) { for(int i=0;i<a.length;i++) System.out.print(" " + (i>9?"": " ") + i ); System.out.print("\n[ " + a[0]); for (int i = 1; i<a.length;i++) System.out.print(", " +a[i]); System.out.print(" }"); } public static int ricercaSequenziale(int[] a, int x) { for (int i=0;i<a.length; i++) if (a[i]==x) return i; return -1; } } **************************** //file FirstTestSupArray.java // il programma utilizza il package //demo.myarray.SupArray per generare numeri random // Utilizza il membro "print" della classe SupArray // per stampare gli elementi dell'array import demo.myarray.SupArray; public class FirstTestSupArray { private static final int SIZE = 20; private static final int START = 40; private static final int RANGE = 20; private static int a[] = new int[SIZE]; public static void main(String [] args) { System.out.println("Generazione di array con numeri casuali utilizzando "); System.out.println("il package demo.myarray.SupArray"); SupArray.load(a,START,RANGE); SupArray.print(a); SupArray.load(a,START,RANGE); SupArray.print(a); } } ******************************************** //file FinalTestSupArray.java //il programma utilizza il package //demo.myarray.SupArray per eseguire // ricerche all'interno di array generati // casualmente // Utilizza il membro "print" della classe SupArray // per stampare gli elementi dell'array import demo.myarray.SupArray; // Verifica della Ricerca consequenziale public class FinalTestSupArray { private static final int SIZE = 16; private static final int START =40; private static final int RANGE = 20; private static int a[] = new int[SIZE]; public static void main(String[] args) { SupArray.load(a,START,RANGE); SupArray.print(a); test(); test(); test(); test(); } public static void test() { int x = SupArray.load(START,RANGE); System.out.print("Cerca x = " + x + ":\t"); int i = SupArray.ricercaSequenziale(a,x); if (i >= 0) System.out.println("Trovato!! .... a[" +i+ "] = " + a[i]); if (i >= 0) System.out.println("i = " +i+" ==> x Non trovato!!!"); } } Warning: include(ads/text468x15.html): failed to open stream: No such file or directory in D:\inetpub\webs\fishscriptcom\documents\view_document.php on line 131 Warning: include(): Failed opening 'ads/text468x15.html' for inclusion (include_path='.;C:\php\pear') in D:\inetpub\webs\fishscriptcom\documents\view_document.php on line 131 Tutorial ![]() ![]() ![]() ![]() ![]() ![]() ![]() Script ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Comandi ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
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A good scientist is a person with original ideas.
A good engineer is a person who makes a design that works with as few original ideas as possible. There are no prima donnas in engineering. Freeman Dyson A good scientist is a person with original ideas.
A good engineer is a person who makes a design that works with as few original ideas as possible. There are no prima donnas in engineering. Freeman Dyson
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