Blog Archives

Print Number Series using Java

package in.malliktalksjava;

/**
* @author malliktalksjava.in
*
* This program prints the numbers in below pattern
* 1
* 123
* 12345
* 1234567
* 12345
* 123
* 1
*/
class PrintingNumberPatterns{

public static void main(String[] args){
printNumberSeries();
}

/**
* Print the numbers in assending and decending order by iterating it.
*/
private static void printNumberSeries() {
for (int i = 1; i <= 7; i += 2) {
for (int j = 1; j <= i; j++) {
System.out.print(j);
}
System.out.println();
}

for (int i = 5; i >= 1; i -= 2) {
for (int j = 1; j < i + 1; j++) {
System.out.print(j);
}
System.out.println();
}
}
}

 

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