Pyramid star pattern
Pyramid star pattern
To print the Pyramid star pattern we need two loop. first is outer loop and second is inner loop.
first loop that is the outer loop works on the row or line and the another loop that is inner loop works on the column mean how many start you want to put in the single line.so here we need to now proper working of the loop that we can easily make a desired pattern.
Now we will discuss all possible star pattern using java.
1. Write a Program to print the following pattern.
*
* *
* * *
* * * *
* * * * *
Working
Step 1- first you need to initialize two variable for loop.
Step 2- the first loop for the row.
Step 3- the second loop work for the column.
Step 4- now print the *.
Step 5- now out side of loop, put new line.
Step 5- stop.
C
JAVA
Python 1
Python 2
C++
C
#include<stdio.h>
int main()
{
int i, j;
for(i=1; i<=5; i++)
{
for(j=1; j<=i; j++)
{
printf("* ");
}
printf("\n");
}
return 0;
}
JAVA
public class Main
{
public static void main(String[] args)
{
int i,j;
//this loop work on the row
for(i=0;i<5;i++)
{
//this loop work on the column
for(j=1;j<=i;j++)
{
System.out.print("* ");
}
System.out.println();
}
}
}Python 1
for i in range(5):
for j in range(i+1):
print(“*”,end=” “)
print()
Python 2
for i in range(5):print(“* “*(i+1))
C++
#include<iostream.h>
using namespace std;
int main()
{
int i, j;
for(i=1; i<=5; i++)
{
for(j=1; j<=i; j++)
{
cout<<"* ";
}
cout<<"\n";
}
return 0;
}
2. Write a program to print the following pattern
*
* * *
* * * * *
* * * * * * *
* * * * * * * * *
C
JAVA
Python 1
Python 2
C++
C
#include<stdio.h>
int main()
{
int i, j, k=1;
for(i=1; i<=5; i++)
{
for(j=1; j<=k; j++)
{
printf("* ");
}
printf("\n");
k = k + 2;
}
return 0;
}
JAVA
public class Main
{
public static void main(String[] args) {
int i,j,k=1;
//this loop work on the row
for(i=0;i<5;i++)
{
//this loop work on the column
//here we want to print * two more than previous row
//so this loop work on the k
for(j=0;j<k;j++)
System.out.print(" * ");
//increment k with 2
k=k+2;
System.out.println();
}
}
Python 1
for i in range(5):
for j in range(2*i+1):
print(“*”,end=” “)
print()
Python 2
for i in range(5):print(“* “*(2*i+1))
C++
#include<iostream>
using namespace std;
int main()
{
int i, j, k=1;
for(i=1; i<=5; i++)
{
for(j=1; j<=k; j++)
{
cout<<"* ";
}
cout<<endl;
k = k + 2;
}
return 0;
}
3. Write a program to print the following pattern
*
* *
* * *
* * * *
* * * * *
C
JAVA
Python 1
Python 2
C++
C
#include <stdio.h>
int main()
{
int n,m=1;
for(int i=5;i>=1;i--)
{
for(int j=1;j<=i-1;j++)
{
printf(" ");
}
for(int k=1;k<=m;k++)
{
printf("*");
}
printf("\n");
m++;
}
return 0;
}
JAVA
public class Main
{
public static void main(String[] args)
{
int i,j,k=8;
//this loop work on the row
for(i=0;i<5;i++)
{
//this loop work for spaces
for(j=0;j<k;j++)
System.out.print(" ");
//decrement k for reduce the spaces in next row
k=k-2;
//this loop work for print the *
for(j=0;j<=i;j++)
System.out.print("* ");
System.out.println();
}
}
}
Python 1
n=5
for i in range(n):
for j in range(n):
if(i+j<n-1):
print(” “,end=“”)
else:
print(“*”,end=“”)
print()
Python 2
for i in range(5):print(” “*(5-i-1)+“*”*(i+1))
C++
#include<iostream>
using namespace std;
int main()
{
int n,m=1;
for(int i=5;i>=1;i--)
{
for(int j=1;j<=i-1;j++)
{
cout<<" ";
}
for(int k=1;k<=m;k++)
{
cout<<"*";
}
cout<<endl;
m++;
}
return 0;
}
4. Write the code to print the following patter
*
* * *
* * * * *
* * * * * * *
* * * * * * * * *
C
JAVA
Python 1
Python 2
C++
C
#include <stdio.h>
int main()
{
int i,j,k=16,s=1;
for(i=0;i<5;i++)
{
for(j=0;j<k;j++)
{
printf(" ");
}
k=k-4;
for(j=1;j<=s;j++)
{
printf("* ");
}
s=s+2;
printf("\n");
}
return 0;
}
JAVA
public class Main
{
public static void main(String[] args)
{
int i,j,k=16,s=1;
//this loop work on the row
for(i=0;i<5;i++)
{
//this loop work on space
for(j=0;j<k;j++)
System.out.print(" ");
//decrement k for reduce the spaces in the next row
k=k-4;
//this loop work on the column
//here we want to print * two more than the previous row
//so this loop work on the k
for(j=1;j<=s;j++)
System.out.print("* ");
//increment s with 2
s=s+2;
System.out.println();
}
}
}
Python 1
n=5
for i in range(5):
for j in range(2*n+1):
if(j<(2*n-1)-(2*i-1)):
print(” “,end=“”)
else:
print(“*”,end=“”)
print()
Python 2
for i in range(5):print(” “*((5*2–1)-(2*i-1))+“*”*(2*i+1))
C++
#include<iostream>
using namespace std;
int main()
{
int i,j,k=16,s=1;
for(i=0;i<5;i++)
{
for(j=0;j<k;j++)
{
cout<<" ";
}
k=k-4;
for(j=1;j<=s;j++)
{
cout<<"* ";
}
s=s+2;
cout<<endl;
}
return 0;
}
5. Write the code to print the following pattern.
*
***
*****
*******
*********
C
JAVA
Python 1
Python 2
C++
C
#include <stdio.h>
int main()
{
int i,j,k=0,row=5;
//this loop work on the row
for (i=1;i<=row;i++)
{
//this loop work for both the space and print *
for(j=1;j<=row-i;j++)
printf(" ");
//until value of the k is not equal to 2*i-i, it print star
while(k!=(2*i-1))
{
printf("*");
k++;
}
k=0;
printf("\n");
}
return 0;
}
JAVA
public class Main
{
public static void main(String[] args)
{
int i,j,k=0,row=5;
//this loop work on the row
for (i=1;i<=row;i++)
{
//this loop work for both the space and print *
for(j=1;j<=row-i;j++)
System.out.print(" ");
//until value of the k is not equal to 2*i-i, it print star
while(k!=(2*i-1))
{
System.out.print("*");
k++;
}
k=0;
System.out.println();
}
}
}
Python 1
n=5
for i in range(5):
for j in range(2*n+1):
if(j<n-i-1):
print(” “,end=“”)
else:
print(“*”*(2*i+1),end=“”)
break
print()
Python 2
for i in range(5):print(” “*(5-i-1)+“*”*(2*i+1))
C++
#include<iostream>
using namespace std;
int main()
{
int i,j,k=0,row=5;
//this loop work on the row
for (i=1;i<=row;i++)
{
//this loop work for both the space and print *
for(j=1;j<=row-i;j++)
cout<<" ";
//until value of the k is not equal to 2*i-i, it print star
while(k!=(2*i-1))
{
cout<<"*";
k++;
}
k=0;
cout<<endl;
}
return 0;
}
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For * pyramid printing
#include
using namespace std;
int main()
{
int i,j,k=0,row=5;
for (i=1;i<=row;i++)
{
for(j=1;j<=row-i;j++)
printf(" ");
for(k=1;k<=(2*i-1);k++)
printf("*");
printf("\n");
}
return 0;
}
QUESTION:5 Solutions
public class Star
{
public static void main(String args[])
{
int i,k=9,p=1;
for(i=0;i<5;i++) //For the row
{
for(int z=0;z<k;z++) // for the spaces in a row
System.out.print(" ");
k= k-1;
for(int j=0;j<p;j++) // for printing the *
{
System.out.print("*");
}
p = p + 2;
System.out.println();
}
}
}
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