Java - Pattern of Numbers and Stars
Here is the Java Source code to display a Pattern of Numbers and Stars.
Source Code
import java.io.*;
import java.lang.*;
class Pattern {
public static void main(String[] args) {
String inpstring = "";
InputStreamReader input = new InputStreamReader(System.in);
BufferedReader reader = new BufferedReader(input);
try
{
System.out.print("Enter a Number to build pattern:");
inpstring = reader.readLine();
int n = Integer.parseInt(inpstring, 10);
for(int i = n; i > 1; i--)
{
for(int j = 1; j <= i; j++)
System.out.print("*");
System.out.println();
}
for(int i = 1; i <= n; i++)
{
for(int j = 1; j <= i; j++)
System.out.print("*");
System.out.println();
}
System.out.println();
for(int i = 1; i < n; i++)
{
for(int j = 1; j <= i; j++)
System.out.print(j);
System.out.println();
}
for (int i = n; i >= 0; i--)
{
for (int j = 1; j <= i; j++)
System.out.print(j);
System.out.println();
}
System.out.println();
}
catch (Exception e)
{
e.printStackTrace();
}
}
}
Output
D:\Program Files\Java\jdk1.6.0_23\bin>Java Pattern
Enter a Number to build pattern:7
*******
******
*****
****
***
**
*
**
***
****
*****
******
*******
1
12
123
1234
12345
123456
1234567
123456
12345
1234
123
12
1
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