Uvod v zvezde vzorcev na Javi
Najprej bomo v tem dokumentu videli, kako uporabljati programiranje Java za delo s programi vzorcev Star. Zvezdni vzorci so eden izmed običajnih programov Java vzorcev, ki se pogosto uporabljajo za izboljšanje logičnega razmišljanja in izboljšanje znanja o nadzoru pretoka. Za prikaz vzorcev zvezd v programiranju Java morate uporabiti dve zanki ali tri zanke (odvisno od programov). Prva zanka je zunanja zanka, druga zanka pa notranja zanka, ki prikazuje vrstice in stolpce.
Za tiste Java programerje, ki želijo vedeti o vzorcih oblikovanja kot načinu za izboljšanje svojih objektivno usmerjenih sposobnosti oblikovanja in razvoja, je ta dokument uporaben.
Primeri vzorcev zvezd
Pogovorimo se o nekaj primerih, kako lahko razumemo koncept vzorcev na Javi.
Primer 1
import java.util.Scanner;
public class FirstPattern
(
public static void main(String() args)
(
Scanner scanner = new Scanner(System.in);
System.out.println("Please provide number of rows to print… ");
int myrows = scanner.nextInt();
System.out.println("\nThe star pattern is… ");
for (int m = 1; m <= myrows; m++)
(
for (int n = 1; n <= m; n++)
(
System.out.print("*");
)
System.out.println();
)
)
)
Izhod:
Primer 2
import java.util.Scanner;
public class SecondPattern
(
public static void main(String() args)
(
Scanner scanner = new Scanner(System.in);
System.out.println("Please provide number of rows to print… ");
int myrows = scanner.nextInt();
System.out.println("\nThe star pattern is… ");
for (int m = 1; m <= myrows; m++)
(
for (int n = myrows; n > m; n--)
(
System.out.print("*");
)
System.out.println();
)
)
)
Izhod:
Primer 3
import java.util.Scanner;
public class ThirdPattern
(
public static void main(String() args)
(
Scanner scanner = new Scanner(System.in);
System.out.println("Please provide number of rows to print… ");
int myrows = scanner.nextInt();
System.out.println("\nThe star pattern is… ");
for (int m = 1; m <= myrows; m++)
(
for (int n = 1; n < m; n++)
(
System.out.print(" ");
)
for (int p=myrows; p>=m; p--)
(
System.out.print("*");
)
System.out.println();
)
)
)
Izhod:
Primer 4
import java.util.Scanner;
public class FourthPattern
(
public static void main(String() args)
(
Scanner scanner = new Scanner(System.in);
System.out.println("Please provide number of rows to print… ");
int myrows = scanner.nextInt();
System.out.println("\nThe star pattern is… ");
for (int m = 1; m <= myrows; m++)
(
for (int n=myrows; n>m; n--)
(
System.out.print(" ");
)
for (int p=1; p<=(m * 2) -1; p++)
(
System.out.print("*");
)
System.out.println();
)
)
)
Izhod:
Primer 5
import java.util.Scanner;
public class FifthPattern
(
public static void main(String() args)
(
Scanner scanner = new Scanner(System.in);
System.out.println("Please provide number of rows to print… ");
int myrows = scanner.nextInt();
System.out.println("\nThe star pattern is… ");
for (int m=myrows; m>=1; m--)
(
for (int n=1; n<=(m * 2) -1; n++)
(
System.out.print("*");
)
System.out.println();
for (int p=myrows; p>=m; p--)
(
System.out.print(" ");
)
)
)
)
Izhod:
Primer 6
import java.util.Scanner;
public class SixthPattern
(
public static void main(String() args)
(
Scanner scanner = new Scanner(System.in);
System.out.println("Please provide number of rows to print… ");
int myrows = scanner.nextInt();
System.out.println("\nThe star pattern is… ");
for (int m=1; m<=myrows; m++)
(
for (int n=myrows; n>m; n--)
(
System.out.print(" ");
)
for (int p=1; p<=(m * 2) -1; p++)
(
System.out.print("*");
)
System.out.println();
)
for (int m=myrows-1; m>=1; m--)
(
for (int n=myrows-1; n>=m; n--)
(
System.out.print(" ");
)
for (int p=1; p<=(m * 2) -1; p++)
(
System.out.print("*");
)
System.out.println();
)
)
)
Izhod:
Primer 7
import java.util.Scanner;
public class SeventhPattern
(
public static void main(String() args)
(
Scanner scanner = new Scanner(System.in);
System.out.println("Please provide number of rows to print… ");
int myrows = scanner.nextInt();
System.out.println("\nThe star pattern is… ");
for (int m = 1; m <= myrows; m++)
(
for (int n=1; n<=m; n++)
(
if( n == 1 || n == m || m == myrows)
System.out.print("*");
else
System.out.print(" ");
)
System.out.println();
)
)
)
Izhod:
Primer 8
import java.util.Scanner;
public class EighthPattern
(
public static void main(String() args)
(
Scanner scanner = new Scanner(System.in);
System.out.println("Please provide number of rows to print… ");
int myrows = scanner.nextInt();
System.out.println("\nThe star pattern is… ");
for (int m = myrows; m >= 1; m--)
(
for (int n = m; n >= 1; n--)
(
System.out.print("*");
)
System.out.println();
)
for (int m = 2; m <= myrows; m++)
(
for (int n = m; n >= 1; n--)
(
System.out.print("*");
)
System.out.println();
)
)
)
Izhod:
Primer 9
import java.util.Scanner;
public class NinthPattern
(
public static void main(String() args)
(
Scanner scanner = new Scanner(System.in);
System.out.println("Please provide number of rows to print… ");
int myrows = scanner.nextInt();
System.out.println("\nThe star pattern is… ");
for (int m = 1; m <= myrows; m++)
(
for (int n = myrows-1; n>=m; n--)
(
System.out.print(" ");
)
for (int p = 1; p <= myrows; p++)
(
System.out.print("*");
)
System.out.println();
)
)
)
Izhod:
Primer 10
import java.util.Scanner;
public class TenthPattern
(
public static void main(String() args)
(
Scanner scanner = new Scanner(System.in);
System.out.println("Please provide number of rows to print… ");
int myrows = scanner.nextInt();
System.out.println("\nThe star pattern is… ");
for (int m = 1; m <= myrows; m++)
(
for (int n = 1; n < m; n++)
(
System.out.print(" ");
)
for (int p = m; p <= myrows; p++)
(
System.out.print("* ");
)
System.out.println();
)
for (int m = myrows-1; m >= 1; m--)
(
for (int n = 1; n < m; n++)
(
System.out.print(" ");
)
for (int p = m; p <= myrows; p++)
(
System.out.print("* ");
)
System.out.println();
)
)
)
Izhod:
Primer 11
import java.util.Scanner;
public class ElevenPattern
(
public static void main(String() args)
(
Scanner scanner = new Scanner(System.in);
System.out.println("Please provide number of rows to print… ");
int myrows = scanner.nextInt();
System.out.println("\nThe star pattern is… ");
for (int m=myrows; m>=1; m--)
(
for (int n=1; n <=(m * 2) -1; n++)
(
if( n == 1 || n == (m * 2) -1 || m == myrows)
System.out.print("*");
else
System.out.print(" ");
)
System.out.println();
for (int p = myrows; p >= m; p--)
(
System.out.print(" ");
)
)
)
)
Izhod:
Primer 12
import java.util.Scanner;
public class TwelthPattern
(
public static void main(String() args)
(
Scanner scanner = new Scanner(System.in);
System.out.println("Please provide number of rows to print… ");
int myrows = scanner.nextInt();
System.out.println("\nThe star pattern is… ");
for (int m = 1; m <= myrows; m++)
(
for (int n = 1; n <= myrows; n++)
(
System.out.print("*");
)
System.out.println();
)
)
)
Izhod:
Zaključek
Do sedaj smo razpravljali o različnih vrstah vzorcev v programskem jeziku Java. Ti vzorci so najboljše prakse, ki jih uporabljajo izkušeni objektno usmerjeni oblikovalci programske opreme. Uporabniki lahko uporabljajo te oblikovalske vzorce za razpravo o objektno usmerjeni programski opremi. S pomočjo teh vzorcev so se neizkušeni razvijalci lahko na enostaven in hitrejši način naučili oblikovanja programske opreme.
Priporočeni članki
To je vodnik za Zvezdne vzorce na Javi. Tukaj obravnavamo uvod in različne primere skupaj z vzorčno kodo. Če želite izvedeti več, lahko preberete tudi druge naše predlagane članke -
- Kaj je Java Dediščina?
- Kaj je oblikovalski vzorec na Javi?
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