package programming.exercises;

import java.util.Scanner;

public class Patterns {

public static void main(String[] args) {

/* Java Patterns 1

*

* *

* * *

* * * *

ends*/

System.out.println("Pattern 1 \n");

for (int i=0;i<4;i++){

for (int j=0;j<=i;j++){

System.out.print("*");

}

System.out.print("\n");

}

/* Java Patterns 2

*

* *

* * *

* * * *

ends*/

System.out.println("Pattern 2");

Scanner in = new Scanner(System.in);

int n = in.nextInt();

System.out.println("Enter value n");

int k = 2*n-2;

for (int i=0;i<n;i++){

for(int j=0;j<k;j++){

System.out.print(" ");

}

k=k-2;

for(int j=0;j<=i;j++) {

System.out.print("* ");

}

System.out.println();

}

/*Java Pattern 3

1

1 2

1 2 3

1 2 3 4

ends*/

System.out.println("Java Pattern 3");

for (int i=1;i<=4;i++){

for(int j=1;j<=i;j++){

System.out.print(j+" ");

}

System.out.println();

}

/*

Java Pattern 4

1

1 2

1 2 3

1 2 3 4

ends*/

System.out.println("Java Pattern 4");

int a = 4;

int b = a-1;

for(int i=1;i<=4;i++){

for(int j=1;j<=b;j++){

System.out.print(" ");

}

for(int j=1;j<=i;j++){

System.out.print(j);

}

b=b-1;

System.out.println();

}

/*Java Pattern 5

1

21

321

4321

ends*/

System.out.println("Java Pattern 5");

int l = 4;

int m = l-1;

for(int i=1;i<=4;i++){

for(int j=1;j<=m;j++){

System.out.print(" ");

}

m=m-1;

for(int j=1;j<=i;j++){

System.out.print(j);

}

System.out.println();

}

}

}