In this tutorial, we will discuss a concept of Java program to display integrated pyramid number pattern using while loop
In the Java programming language, we can use for loop ,while loop and do-while loop to display different number (binary, decimal), alphabets or star pattern programs.
In this article, we are going to learn how to Display integrated pyramid number pattern using while loop in Java language
Program 1
import java.util.Scanner;
class DoublePyramidWhile{
public static void main(String args[]){
int i,j; //variable declaration
Scanner scan=new Scanner(System.in);
//create a scanner object for input
System.out.print("Enter the number of rows: ");
int row=scan.nextInt(); //get input from user
i=1;
while(i<=row){//print upper part of shape
j=i;
while(j<=row){
System.out.print(j);
j++;
}
i++;
System.out.print("\n");
}
i=row-1;
while(i>=1){
j=i;
while(j<=row){
System.out.print(j);
j++;
}
i--;
System.out.print("\n");
}
}
}
When the above code is executed, it produces the following results
Program 2
import java.util.Scanner;
class DoublePyramidWhile1{
public static void main(String args[]){
int i,j; //variable declaration
Scanner scan=new Scanner(System.in);
//create a scanner object for input
System.out.print("Enter the number of rows: ");
int row=scan.nextInt();//get input from user
i=1;
while(i<=row){//print upper part of shape
j=1;
while(j<i){
System.out.print(" ");//print space
j++;
}
j=i;
while(j<=row){
System.out.print(j);
j++;
}
i++;
System.out.print("\n");
}
i=row-1;
while(i>=1){//print lower part of shape
j=1;
while(j<i){
System.out.print(" ");
j++;
}
j=i;
while(j<=row){
System.out.print(j);
j++;
}
i--;
System.out.print("\n");
}
}
} When the above code is executed, it produces the following results
Program 3
import java.util.Scanner;
class DoublePyramidWhile7{
public static void main(String args[]){
int i,j,k; //variable declaration
Scanner scan=new Scanner(System.in);
//create a scanner object for input
//get input from the user for rows
System.out.print("Enter the number of rows: ");
int rows=scan.nextInt();//get input from user
i=rows;
while(i>=1){
j=1;
while(j<=i){
System.out.print(j);
j++;
}
System.out.print("\n");
i--;
}
i=1;
while( i<rows){//print lower part of shape
j=1;
while(j<=i){
System.out.print(j);
j++;
}
System.out.print("\n");
i++;
}
}
} When the above code is executed, it produces the following results
program 4
import java.util.Scanner;
class DoublePyramidWhile2{
public static void main(String args[]){
int i,j; //variable declaration
Scanner scan=new Scanner(System.in);
//create a scanner object for input
System.out.print("Enter the number of rows: ");
int row=scan.nextInt(); //get input from user
i=1;
while(i<=row){//print upper part of shape
j=1;
while(j<=i){
System.out.print(" ");//print space
j++;
}
j=i;
while(j<=row){
System.out.print(j+" ");//print number with space
j++;
}
i++;
System.out.print("\n");
}
i=row-1;
while(i>=1){//print lower part of shape
j=1;
while(j<=i){
System.out.print(" ");
j++;
}
j=i;
while(j<=row){
System.out.print(j+" ");
j++;
}
i--;
System.out.print("\n");
}
}
} When the above code is executed, it produces the following results
Program 5
import java.util.Scanner;
class DoublePyramidWhile3{
public static void main(String args[]){
int i,j,k; //variable declaration
Scanner scan=new Scanner(System.in);
//create a scanner object for input
System.out.print("Enter the number of rows: ");
int row=scan.nextInt();//get input from user
i=1;
while(i<=row){//print upper part of shape
j=1;
while(j<=row-i){
System.out.print(" ");//print space
j++;
}
j=1;
while(j<=i){
System.out.print(j+" ");//print number with space
j++;
}
i++;
System.out.print("\n");
}
i=1;
while(i<=row-1){//print lower part of shape
j=1;
while(j<=i){
System.out.print(" ");
j++;
}
j=1;
while(j<=row-i){
System.out.print(j+" ");
j++;
}
i++;
System.out.print("\n");
}
}
} When the above code is executed, it produces the following results
Program 6
import java.util.Scanner;
class DoublePyramidWhile4{
public static void main(String args[]){
int i,j,k; //variable declaration
Scanner scan=new Scanner(System.in);
//create a scanner object for input
//get input from the user for rows
System.out.print("Enter the number of rows: ");
int rows=scan.nextInt();//get input from user
i=1;
while(i<=rows){
for(j=1; j<=i; j++){
System.out.print(j);
}
j=i*2;
while(j<rows*2){
System.out.print(" ");
j++;
}
k=i;
while( k>=1){
System.out.print(k);
k--;
}
System.out.print("\n");
i++;
}
}
} When the above code is executed, it produces the following results
Program 7
import java.util.Scanner;
class DoublePyramidWhile5{
public static void main(String args[]){
int i,j,k; //variable declaration
Scanner scan=new Scanner(System.in);
//create a scanner object for input
//get input from the user for rows
System.out.print("Enter the number of rows: ");
int rows=scan.nextInt();//get input from user
i=rows;
while(i>=1){ //parent while loop
j=rows;
while(j>=1+rows-i){
System.out.print(j);
j--;
}
j=i*2;
while(j<rows*2-1){
System.out.print(" ");
j++;
}
k=1+rows-i;
while( k<=rows){
if(k!=1)
System.out.print(k);
k++;
}
System.out.print("\n");
i--;
}
}
} When the above code is executed, it produces the following results
Program 8
import java.util.Scanner;
class DoublePyramidWhile6{
public static void main(String args[]){
int i,j,k; //variable declaration
Scanner scan=new Scanner(System.in);
//create a scanner object for input
//get input from the user for rows
System.out.print("Enter the number of rows: ");
int rows=scan.nextInt();//get input from user
i=rows;
while(i>=1){
j=1;
while(j<=i){
System.out.print(j);
j++;
}
j=i*2;
while( j<rows*2-1){
System.out.print(" ");
j++;
}
k=i;;
while( k>=1){
if(k!=rows)
System.out.print(k);
k--;
}
System.out.print("\n");
i--;
}
}
} When the above code is executed, it produces the following results
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