Pattern Programs in Java Based on:
Numeric PatternsCharacter PatternsStar Patterns in JavaMixed patterns
Patter Program - level 3
Pattern Program 48::
Pyramid Program
*
* *
* * *
* * * *
* * * * *
import java.util.Scanner;
public class Pattern
{
public static void main(String args[])
{
Scanner sc = new Scanner(System.in);
System.out.print("Enter the value of n: ");
int n = sc.nextInt();
for (int i=0; i<n; i++) //outer loop for number of rows(n)
{
for (int j=n-i; j>1; j--) //inner loop for spaces
{
System.out.print(" "); //print space
}
for (int j=0; j<=i; j++ ) //inner loop for number of columns
{
System.out.print("* "); //print star
}
System.out.println(); //ending line after each row
}
}
}
Pattern Program 49::
Right Triangle Star Pattern
*
* *
* * *
* * * *
* * * * *
public class Pattern
{
public static void main(String args[])
{
Scanner sc = new Scanner(System.in);
System.out.print("Enter the value of n: ");
int n = sc.nextInt();
int i, j;
for(i=0; i<n; i++) //outer loop for number of rows(n)
{
for(j=2*(n-i); j>=0; j--) // inner loop for spaces
{
System.out.print(" "); // printing space
}
for(j=0; j<=i; j++) // inner loop for columns
{
System.out.print("* "); // print star
}
System.out.println(); // ending line after each row
}
}
}
Pattern Program 50::
Left Triangle Star Pattern
*
* *
* * *
* * * *
* * * * *
public class Pattern
{
public static void main(String args[])
{
Scanner sc = new Scanner(System.in);
System.out.print("Enter the value of n: ");
int n = sc.nextInt();
int i, j;
for(i=0; i<n; i++) //outer loop for number of rows(n)
{
for(j=2*(n-i); j>=0; j--) // inner loop for spaces
{
System.out.print(" "); // printing space
}
for(j=0; j<=i; j++) // inner loop for columns
{
System.out.print("* "); // print star
}
System.out.println(); // ending line after each row
}
}
}
Pattern Program 51::
Diamond Shape Pattern Program in Java
Enter the number of rows: 5
*
***
*****
*******
*********
*******
*****
***
*
import java.util.Scanner;
public class Pattern
{
public static void main(String args[])
{
int n, i, j, space = 1;
System.out.print("Enter the number of rows: ");
Scanner s = new Scanner(System.in);
n = s.nextInt();
space = n - 1;
for (j = 1; j<= n; j++)
{
for (i = 1; i<= space; i++)
{
System.out.print(" ");
}
space--;
for (i = 1; i <= 2 * j - 1; i++)
{
System.out.print("*");
}
System.out.println("");
}
space = 1;
for (j = 1; j<= n - 1; j++)
{
for (i = 1; i<= space; i++)
{
System.out.print(" ");
}
space++;
for (i = 1; i<= 2 * (n - j) - 1; i++)
{
System.out.print("*");
}
System.out.println("");
}
}
}
Pattern Program 52::
Downward Triangle Star Pattern
Enter the number of rows: 5
* * * * *
* * * *
* * *
* *
*
import java.util.Scanner;
public class Pattern
{
public static void main(String[] args)
{
Scanner sc = new Scanner(System.in);
System.out.println("Enter the number of rows: ");
int rows = sc.nextInt();
for (int i= rows-1; i>=0 ; i--)
{
for (int j=0; j<=i; j++)
{
System.out.print("*" + " ");
}
System.out.println();
}
sc.close();
}
}
Pattern Program 53::
Mirrored Right Triangle Star Program
Enter the number of rows: 5
*
**
***
****
*****
******
import java.util.Scanner;
public class Pattern
{
public static void main(String[] args)
{
Scanner sc = new Scanner(System.in);
System.out.println("Enter number of rows: ");
int rows = sc.nextInt();
for (int i= 0; i<= rows; i++)
{
for (int j=1; j<=rows-i; j++)
{
System.out.print(" ");
}
for (int k=0;k<=i;k++)
{
System.out.print("*");
}
System.out.println("");
}
sc.close();
}
}
Pattern Program 54::
Reversed Pyramid Star Pattern
Enter the number of rows: 5
* * * * *
* * * *
* * *
* *
*
import java.util.Scanner;
public class Pattern
{
public static void main(String[] args)
{
Scanner sc = new Scanner(System.in);
System.out.println("Enter the number of rows: ");
int rows = sc.nextInt();
for (int i= 0; i<= rows-1 ; i++)
{
for (int j=0; j<=i; j++)
{
System.out.print(" ");
}
for (int k=0; k<=rows-1-i; k++)
{
System.out.print("*" + " ");
}
System.out.println();
}
sc.close();
}
}
Pattern Program 55::
Right Pascal’s Triangle
Enter the number of rows: 5
*
* *
* * *
* * * *
* * * * *
* * * *
* * *
* *
*
import java.util.Scanner;
public class Pattern
{
public static void main(String[] args)
{
Scanner sc = new Scanner(System.in);
System.out.println("Enter the number of rows: ");
int rows = sc.nextInt();
for (int i= 0; i<= rows-1 ; i++)
{
for (int j=0; j<=i; j++)
{
System.out.print("*"+ " ");
}
System.out.println("");
}
for (int i=rows-1; i>=0; i--)
{
for(int j=0; j <= i-1;j++)
{
System.out.print("*"+ " ");
}
System.out.println("");
}
sc.close();
}
}
Pattern Program 56::
Left Triangle Pascal’s
Enter the number of rows: 5
*
**
***
****
*****
****
***
**
*
import java.util.Scanner;
public class Pattern
{
public static void main(String[] args)
{
Scanner sc = new Scanner(System.in);
System.out.println("Enter the number of rows: ");
int rows = sc.nextInt();
for (int i= 1; i<= rows ; i++)
{
for (int j=i; j <rows ;j++)
{
System.out.print(" ");
}
for (int k=1; k<=i;k++)
{
System.out.print("*");
}
System.out.println("");
}
for (int i=rows; i>=1; i--)
{
for(int j=i; j<=rows;j++)
{
System.out.print(" ");
}
for(int k=1; k<i ;k++)
{
System.out.print("*");
}
System.out.println("");
}
sc.close();
}
}
Pattern Program 57::
Sandglass Star Pattern
Enter the number of rows: 5
* * * * *
* * * *
* * *
* *
*
*
* *
* * *
* * * *
* * * * *
import java.util.Scanner;
public class Pattern
{
public static void main(String[] args)
{
Scanner sc = new Scanner(System.in);
System.out.println("Enter the number of rows: ");
int rows = sc.nextInt();
for (int i= 0; i<= rows-1 ; i++)
{
for (int j=0; j <i; j++)
{
System.out.print(" ");
}
for (int k=i; k<=rows-1; k++)
{
System.out.print("*" + " ");
}
System.out.println("");
}
for (int i= rows-1; i>= 0; i--)
{
for (int j=0; j< i ;j++)
{
System.out.print(" ");
}
for (int k=i; k<=rows-1; k++)
{
System.out.print("*" + " ");
}
System.out.println("");
}
sc.close();
}
}
Pattern Program 58::
Triangle Star pattern
Enter the number of rows: 5
*
* *
* *
* *
*********
import java.util.Scanner;
public class Pattern
{
public static void main(String[] args)
{
Scanner sc = new Scanner(System.in);
System.out.println("Enter the number of rows: ");
int rows = sc.nextInt();
for (int i=1; i<= rows ; i++)
{
for (int j = i; j < rows ; j++) {
System.out.print(" ");
}
for (int k = 1; k <= (2*i -1) ;k++) {
if( k==1 || i == rows || k==(2*i-1)) {
System.out.print("*");
}
else {
System.out.print(" ");
}
}
System.out.println("");
}
sc.close();
}
}
Pattern Program 59::
Down triangle
Enter the number of rows: 5
*********
* *
* *
* *
*
import java.util.Scanner;
public class Pattern
{
public static void main(String[] args)
{
Scanner sc = new Scanner(System.in);
System.out.println("Enter the number of rows: ");
int rows = sc.nextInt();
for (int i=rows; i>= 1 ; i--)
{
for (int j = i; j < rows ; j++) {
System.out.print(" ");
}
for (int k = 1; k <= (2*i -1) ;k++) {
if( k==1 || i == rows || k==(2*i-1)) {
System.out.print("*");
}
else {
System.out.print(" ");
}
}
System.out.println("");
}
sc.close();
}
}
Pattern Program 60::
Diamond Star Pattern
Enter the number of rows: 5
*
* *
* *
* *
* *
* *
* *
* *
*
import java.util.Scanner;
public class Pattern
{
public static void main(String[] args)
{
Scanner sc = new Scanner(System.in);
System.out.println("Enter the number of rows: ");
int rows = sc.nextInt();
for (int i=1; i<= rows ; i++) { for (int j = rows; j > i ; j--) {
System.out.print(" ");
}
System.out.print("*");
for (int k = 1; k < 2*(i -1) ;k++)
{
System.out.print(" "); } if( i==1)
{
System.out.println("");
}
else { System.out.println("*");
}
}
for (int i=rows-1; i>= 1 ; i--)
{
for (int j = rows; j > i ; j--) {
System.out.print(" ");
}
System.out.print("*");
for (int k = 1; k < 2*(i -1) ;k++) {
System.out.print(" ");
}
if( i==1)
System.out.println("");
else
System.out.println("*");
}
sc.close();
}
}
Pattern Program 61::
Number Pattern Program
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
import java.util.Scanner;
public class Pattern
{
public static void main(String[] args) {
int i, j, k = 1;
for (i = 1; i <= 5; i++) {
for (j = 1; j< i + 1; j++) {
System.out.print(k++ + " ");
}
System.out.println();
}
}
}
Pattern Program 62::
Pascal’s Triangle Program in Java
1
1 1
1 2 1
1 3 3 1
1 4 6 4 1
import java.util.Scanner;
public class Pattern
{
public static void main(String[] args) {
int n = 5;
for (int i = 0; i < n; i++) {
int number = 1;
System.out.printf("%" + (n - i) * 2 + "s", "");
for (int j = 0; j <= i; j++) {
System.out.printf("%4d", number);
number = number * (i - j) / (j + 1);
}
System.out.println();
}
}
}
Pattern Program 63::
Diamond Pattern Program in Java
1
212
32123
4321234
32123
212
1
import java.util.Scanner;
public class Pattern
{
public static void main(String[] args) {
for (int i = 1; i <= 4; i++)
{
int n = 4;
for (int j = 1; j<= n - i; j++)
{
System.out.print(" ");
}
for (int k = i; k >= 1; k--)
{
System.out.print(k);
}
for (int l = 2; l <= i; l++)
{
System.out.print(l);
}
System.out.println();
}
for (int i = 3; i >= 1; i--)
{
int n = 3;
for (int j = 0; j<= n - i; j++) { System.out.print(" "); } for (int k = i; k >= 1; k--)
{
System.out.print(k);
}
for (int l = 2; l <= i; l++)
{
System.out.print(l);
}
System.out.println();
}
}
}
Pattern Program 64::
Diamond Numeric Pattern
1 2 3 4 5
2 3 4 5
3 4 5
4 5
5
4 5
3 4 5
2 3 4 5
1 2 3 4 5
import java.util.Scanner;
public class Pattern
{
public static void main(String[] args)
{
int n = 5;
for (int i = 1; i <= n; i++)
{
for (int j = 1; j < i; j++)
{
System.out.print(" ");
}
for (int k = i; k <= n; k++)
{
System.out.print(k+" ");
}
System.out.println();
}
for (int i = n-1; i >= 1; i--)
{
for (int j = 1; j < i; j++)
{
System.out.print(" ");
}
for (int k = i; k <= n; k++)
{
System.out.print(k+" ");
}
System.out.println();
}
}
}