Star pyramid program in java

Star pyramid program in java

import java.util.Scanner;
public class StarPyramid
{
 public static void main(String[] args) {
  int num;
  Scanner sc = new Scanner(System.in);
  System.out.print("Enter number of row : ");
  num = sc.nextInt();
  for (int r = 1; r <= num; r++) {
   for (int sp = (num - r); sp >= 1; sp--) {
    System.out.print(" ");
   }
   for (int c = 1; c <= (r * 2) - 1; c++) {
    System.out.print("*");
   }
   System.out.println();
  }
 }
}

Output:

Enter number of row : 5

        *
      * * *
    * * * * *
  * * * * * * *
* * * * * * * * *


BUILD SUCCESSFUL (total time: 2 seconds)

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Alphabet pyramid pattern program in java

Alphabet pyramid pattern program in java

import java.util.Scanner;
public class AlphabetPyramid
{
 public static void main(String[] args) {
  char ch;
  Scanner sc = new Scanner(System.in);
  System.out.print("Enter pyramid character : ");
  ch = sc.next().charAt(0);
  if (ch >= 'a' && ch <= 'z') {
   ch = (char)(ch - 32);
  }
  for (char r = 'A'; r <= ch; r++) {
   for (int sp = (ch - r); sp >= 1; sp--) {
    System.out.print(" ");
   }
   for (char c = 'A'; c <= r; c++) {
    System.out.print(c);
   }
   for (char c = (char)(r - 1); c >= 'A'; c--) {
    System.out.print(c);
   }
   System.out.println();
  }
 }
}

Output:

Enter pyramid character : e

       A
      ABA
    ABCBA
  ABCDCBA
ABCDEDCBA


BUILD SUCCESSFUL (total time: 2 seconds)

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Character triangle program in Java

Character triangle program in Java

import java.util.Scanner;
public class CharacterTriangle
{
 public static void main(String[] args) {
  char ch;
  Scanner sc = new Scanner(System.in);
  System.out.print("Enter pyramid character : ");
  ch = sc.next().charAt(0);
  if (ch >= 'a' && ch <= 'z') {
   ch = (char)(ch - 32);
  }
  for (char r = 'A'; r <= ch; r++) {
   for (int sp = r; sp > 'A'; sp--) {
    System.out.print(" ");
   }
   for (char c = r; c <= ch; c++) {
    System.out.print(c);
   }
   for (char c = (char)(ch - 1); r <= c; c--) {
    System.out.print(c);
   }
   System.out.println();
  }
 }
}

Output:

Enter pyramid character : e

ABCDEDCBA
  BCDEDCB
    CDEDC
      DED
        E


BUILD SUCCESSFUL (total time: 2 seconds)

Note: Hello friends, If you have any better solution for this programs then please comment below, I will add your comment as a solution for this programs.

Thanks for visiting my blog.

Number pyramid program in Java

import java.util.Scanner;
public class NumberPyramid
{
 public static void main(String[] args) {
  int num;
  Scanner sc = new Scanner(System.in);
  System.out.print("Enter number of rows : ");
  num = sc.nextInt();
  for (int r = 1; r <= num; r++) {
   for (int sp = num - r; sp >= 1; sp--) {
    System.out.print(" ");
   }
   for (int c = 1; c <= r; c++) {
    System.out.print(" " + c);
   }
   System.out.println();
  }
 }
}

Output:

Enter number of rows : 6

            1
         1  2
       1  2  3
     1  2  3  4
   1  2  3  4  5
 1  2  3  4  5  6


BUILD SUCCESSFUL (total time: 2 seconds)

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Number rhombus pattern program in Java

import java.util.Scanner;
public class NumberRhombus
{
 public static void main(String[] args) {
  int num;
  Scanner sc = new Scanner(System.in);
  System.out.print("Enter number of rows : ");
  num = sc.nextInt();
  for (int r = 1; r <= num; r++) {
   for (int sp = num - r; sp >= 1; sp--) {
    System.out.print(" ");
   }
   for (int c = 1; c <= r; c++) {
    System.out.print(c);
   }
   for (int c = r - 1; c >= 1; c--) {
    System.out.print(c);
   }
   System.out.println();
  }
  for (int r = 1; r <= num; r++) {
   for (int sp = r; sp >= 1; sp--) {
    System.out.print(" ");
   }
   for (int c = 1; c <= num - r; c++) {
    System.out.print(c);
   }
   for (int c = num - r - 1; c >= 1; c--) {
    System.out.print(c);
   }
   System.out.println();
  }
 }
}

Output:

Enter number of rows : 5
        1
      121
    12321
  1234321
123454321
  1234321
    12321
      121
        1
     

BUILD SUCCESSFUL (total time: 2 seconds)

Character triangle pyramid program in Java

import java.util.Scanner;
public class CharacterTriangle
{
 public static void main(String[] args) {
  char ch;
  Scanner sc = new Scanner(System.in);
  System.out.print("Enter last character of triangle : ");
  ch = sc.next().charAt(0);
  if (ch >= 'a' && ch <= 'z') {
   ch = (char)(ch - 32);
  }
  for (char r = 'A'; r <= ch; r++) {
   for (int sp = ch - r; sp >= 1; sp--) {
    System.out.print(" ");
   }
   for (char c = 'A'; c <= r; c++) {
    System.out.print(c);
   }
   for (char c = (char)(r - 1); c >= 'A'; c--) {
    System.out.print(c);
   }
   System.out.println();
  }
 }
}

Output:

Enter last character of triangle : e

        A
      ABA
    ABCBA
  ABCDCBA
ABCDEDCBA


BUILD SUCCESSFUL (total time: 2 seconds)

Note: Hello friends, If you have any better solution for this programs then please comment below, I will add your comment as a solution for this programs.

Thanks for visiting my blog.

Reverse character triangle pyramid program in Java

import java.util.Scanner;
public class CharacterTrianglePyramid
{
 public static void main(String[] args) {
  char ch;
  Scanner sc = new Scanner(System.in);
  System.out.print("Enter last character of triangle : ");
  ch = sc.next().charAt(0);
  if (ch >= 'a' && ch <= 'z') {
   ch = (char)(ch - 32);
  }
  System.out.println();
  for (char r = 'A'; 'A' <= ch; ch--, r++) {
   for (int sp = r; sp > 'A'; sp--) {
    System.out.print(" ");
   }
   for (char c = 'A'; c <= ch; c++) {
    System.out.print(c);
   }
   for (char c = (char)(ch - 1); c >= 'A'; c--) {
    System.out.print(c);
   }
   System.out.println();
  }
 }
}

Output:

Enter last character of triangle : e

ABCDEDCBA
  ABCDCBA
    ABCBA
      ABA
        A

BUILD SUCCESSFUL (total time: 7 seconds)

Note: Hello friends, If you have any better solution for this programs then please comment below, I will add your comment as a solution for this programs.

Thanks for visiting my blog.

Number triangle pyramid program in Java

import java.util.Scanner;
public class NumberTriangle
{
 public static void main(String[] args) 
 {
  int num;
  System.out.print("Enter loop repeat number(rows): ");
  Scanner sc = new Scanner(System.in);
  num = sc.nextInt();
  for (int r = 1; r <= num; r++) {
   for (int sp = 1; sp <= num - r; sp++) {
    System.out.print("  ");                         //it is 2 blank space
   }
   for (int c = 1; c <= 2 * r - 1; c++) {
    System.out.print(" " + c);
   }
   System.out.println();
  }
 }
}

Output:

Enter loop repeat number(rows): 5

         1
       1 2 3
     1 2 3 4 5
   1 2 3 4 5 6 7
 1 2 3 4 5 6 7 8 9


BUILD SUCCESSFUL (total time: 4 seconds)

Note: Hello friends, If you have any better solution for this programs then please comment below, I will add your comment as a solution for this programs.

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Number triangle pyramid program in Java.

import java.util.Scanner;
public class NumberTraingle
{
 public static void main(String[] args) 
 {
  int num;
  System.out.print("Enter number of rows : ");
  Scanner sc = new Scanner(System.in);
  num = sc.nextInt();
  for (int r = 1; r <= num; r++) {
   for (int sp = num - r; sp > 0; sp--) {
    System.out.print(" ");
   }
   for (int c = 1; c <= r; c++) {
    System.out.print(r);
   }
   for (int k = 2; k <= r; k++) {
    System.out.print(r);
   }
   System.out.println();
  }
 }
}

Output:

Enter loop repeat number(rows): 5

         1
       1 2 3
     1 2 3 4 5
   1 2 3 4 5 6 7
 1 2 3 4 5 6 7 8 9

BUILD SUCCESSFUL (total time: 3 seconds)

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Empty triangle pyramid program in Java.

package demo;
import java.util.Scanner;
public class BlankPyramid
{
 public static void main(String[] args) 
 {
  Scanner sc = new Scanner(System.in);
  int num;
  System.out.print("Enter no of rows: ");
  num = sc.nextInt();
  System.out.println("*");
  for (int r = 1; r <= num; r++) 
  {
   System.out.print("*");
   for (int sp = 1; sp < r; sp++) 
   {
    System.out.print(" ");
   }
   System.out.println("*");
  }
  for (int j = 1; j <= num + 2; j++) 
  {
   System.out.print("*");
  }
 }
}

Output:
Enter no of rows: 4

*
**
* *
*  *
*   *

******

BUILD SUCCESSFUL (total time: 3 seconds)

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Star triangle frame pyramid program in Java.

package demo;
import java.util.Scanner;
public class TriangleFrame
{
 public static void main(String[] args) 
 {
  int num, n;
  Scanner sc = new Scanner(System.in);
  System.out.print("Enter number of rows: ");
  num = sc.nextInt();
  System.out.println();
  n = num;
  for (int r = 1; r <= num; r++) 
  {
   for (int sp = 1; sp <= r; sp++) {
    System.out.print(" ");
   }
   for (int c = 1; c <= n; c++) {
    System.out.print("*");
   }
   for (int c = num - r; c >= 1; c--) {
    System.out.print("*");
   }
   n--;
   System.out.println();
  }
  for (int r = 2; r <= num; r++) {
   for (int sp = num - r + 1; sp >= 1; sp--) {
    System.out.print(" ");
   }
   for (int c = 1; c <= r; c++) {
    System.out.print("*");
   }
   for (int c = r - 1; c >= 1; c--) {
    System.out.print("*");
   }
   System.out.println();
  }
 }
}

Output:

Enter number of rows: 4

 *******
  *****
   ***
    *
   ***
  *****
 *******

BUILD SUCCESSFUL (total time: 5 seconds)

Note: Hello friends, If you have any better solution for this programs then please comment below, I will add your comment as a solution for this programs.

Thanks for visiting my Blog.

Reverse Number triangle pyramid program in Java.

package demo;
import java.util.Scanner;
public class ReverseNumberTriangle
{
 public static void main(String[] args) 
 {
  int num;
  Scanner sc = new Scanner(System.in);
  System.out.print("Enter any number : ");
  num = sc.nextInt();
  for (int r = 1; r <= num; r++) 
  {
   for (int sp = 1; sp < r; sp++) 
   {
    System.out.print(" ");
   }
   for (int c = r; c <= num; c++) 
   {
    System.out.print(c + " ");
   }
   System.out.println();
  }
 }
}

Output:

Enter any number : 6

1 2 3 4 5 6 
 2 3 4 5 6 
  3 4 5 6 
   4 5 6 
    5 6 
     6 

BUILD SUCCESSFUL (total time: 4 seconds)

Reverse star pyramid program in Java

package demo;
import java.util.Scanner;
public class ReverseStar
{
 public static void main(String[] args) 
 {
  int num, r = 1;
  Scanner sc = new Scanner(System.in);
  System.out.print("Enter loop repeat number(rows): ");
  num = sc.nextInt();
  System.out.println();
  for (; num >= 1; num--, r++) 
  {
   for (int c = 1; c <= num; c++) {
    System.out.print("*");
   }
   for (int sp = r; sp > 1; sp--) {
    System.out.print(" ");
   }
   for (int sp = r; sp > 1; sp--) {
    System.out.print(" ");
   }
   for (int c = num; c >= 1; c--) {
    System.out.print("*");
   }
   System.out.println();
  }
 }
}

Output:

Enter loop repeat number(rows): 7

**************
******  ******
*****    *****
****      ****
***        ***
**          **
*            *


BUILD SUCCESSFUL (total time: 3 seconds)

Java program to print alternative number-star pyramid.

package demo;
import java.util.Scanner;
public class NumberWithStar
{
 public static void main(String[] args) 
 {
  int num, z = 1, p, n;
  Scanner sc = new Scanner(System.in);
  System.out.print("Enter maximum number : ");
  //Input 5 for desire output
  num = sc.nextInt();
  for (int r = 1; r <= num; r++, z = z + 2) 
  {
   for (int c = 1; c <= z; c++) 
   {
    if (c % 2 == 0) {
     System.out.print("*");
    } else {
     System.out.print(r);
    }
   }
   System.out.println();
  }
  n = num + 3;
  p = num - 1;
  for (int r = num; r >= 1; r--, n = n - 2, p--) 
  {
   for (int c = 1; c <= n; c++) 
   {
    if (c % 2 == 0) {
     System.out.print("*");
    } else {
     System.out.print(p);
    }
   }
   System.out.println();
  }
 }
}

Output:

Enter maximum number : 5

1
2*2
3*3*3
4*4*4*4
5*5*5*5*5
4*4*4*4*
3*3*3*
2*2*
1*


BUILD SUCCESSFUL (total time: 5 seconds)