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Pattern Programs in Java Set-2 can be Number Pattern, Alphabets, or Special Symbols. Pattern Program is frequently asked in Interviews for Freshers because the Organization/Company want to check Candidate’s Logical Skills as well as Coding Skills. This post is the collection of some similar shapes of patterns with different types. I hope this post will definitely help you.
Pattern 1:
* ** *** **** *****
Pattern Program in Java:
import java.util.Scanner;
class Pattern_1 {
public static void main(String[] args) {
Scanner sc = new Scanner(System. in );
System.out.println("Enter the numbers of rows : ");
int n = sc.nextInt();
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= i; j++) {
System.out.print("*");
}
System.out.println();
}
}
}Output:
Enter the numbers of rows : 6 * ** *** **** ***** ******
Pattern 2:
1 12 123 1234 12345
Pattern Program in Java:
import java.util.Scanner;
class Pattern_2 {
public static void main(String[] args) {
Scanner sc = new Scanner(System. in );
System.out.println("Enter the numbers of rows : ");
int n = sc.nextInt();
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= i; j++) {
System.out.print(j);
}
System.out.println();
}
}
}Output:
Enter the numbers of rows : 6 1 12 123 1234 12345 123456
Pattern 3:
1 22 333 4444 55555
Pattern Program in Java:
import java.util.Scanner;
class Pattern_3 {
public static void main(String[] args) {
Scanner sc = new Scanner(System. in );
System.out.println("Enter the numbers of rows : ");
int n = sc.nextInt();
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= i; j++) {
System.out.print(i);
}
System.out.println();
}
}
}Output:
Enter the numbers of rows : 6 1 22 333 4444 55555 666666
Pattern 4:
A BB CCC DDDD EEEEE
Pattern Program in Java:
import java.util.Scanner;
class Pattern_4 {
public static void main(String[] args) {
Scanner sc = new Scanner(System. in );
System.out.println("Enter the word to limit the Pattern (In Capitals) : ");
// There is difference A-Z in Capitals and a-z in small cases
//Enter input Carefully
char c = sc.next().charAt(0);
for (char i = 'A'; i <= c; i++) {
for (char j = 'A'; j <= i; j++) {
System.out.print(i);
}
System.out.println();
}
}
}Output:
Enter the word to limit the Pattern (In Capitals) : E A BB CCC DDDD EEEEE
Pattern 5:
A AB ABC ABCD ABCDE
Pattern Program in Java:
import java.util.Scanner;
class Pattern_5 {
public static void main(String[] args) {
Scanner sc = new Scanner(System. in );
System.out.println("Enter the word to limit the Pattern (In Capitals) : ");
// There is difference A-Z in Capitals and a-z in small cases
//Enter input Carefully
char c = sc.next().charAt(0);
for (char i = 'A'; i <= c; i++) {
for (char j = 'A'; j <= i; j++) {
System.out.print(j);
}
System.out.println();
}
}
}Output:
Enter the word to limit the Pattern (In Capitals) : F A AB ABC ABCD ABCDE ABCDEF
Pattern 6:
1 1 2 3 5 8 13 21 34 55 89 144 233 377 610
Pattern Program in Java:
import java.util.Scanner;
public class Fibonacci_Triangle {
public static void main(String[] args) {
Scanner sc = new Scanner(System. in );
System.out.println("Enter the number of rows :");
int n = sc.nextInt();
printFibonacci(n);
}
private static void printFibonacci(int n) {
int N = n * (n + 1) / 2;
int[] fibNumber = new int[N + 1];
//Storing fibonacci Number in an array
fibNumber[1] = 1;
fibNumber[2] = 1;
for (int i = 3; i <= N; i++) {
fibNumber[i] = fibNumber[i - 1] + fibNumber[i - 2];
}
int fibIndex = 1;
//Print the Fibonacci Number in the form of triangle
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= i; j++) {
System.out.print(fibNumber[fibIndex++] + " ");
}
System.out.println();
}
}
}Output:
Enter the number of rows : 5 1 1 2 3 5 8 13 21 34 55 89 144 233 377 610
Pattern 7:
0 01 011 0112 01123
Pattern Program in Java:
import java.util.Scanner;
public class Fibonacci_Pyramid {
public static void main(String[] args) {
Scanner sc = new Scanner(System. in );
System.out.println("Enter the number of rows :");
int n = sc.nextInt();
printFibonacci(n);
}
private static void printFibonacci(int n) {
int N = n * (n + 1) / 2;
int[] fibNumber = new int[N + 1];
//Storing fibonacci Number in an array
fibNumber[0] = 0;
fibNumber[1] = 1;
for (int i = 2; i <= N; i++) {
fibNumber[i] = fibNumber[i - 1] + fibNumber[i - 2];
}
//Print the Fibonacci Number in the form of triangle
for (int i = 1; i <= n; i++) {
int fibIndex = 0;
for (int j = 1; j <= i; j++) {
System.out.print(fibNumber[fibIndex++] + " ");
}
System.out.println();
}
}
}Output:
Enter the number of rows : 5 0 0 1 0 1 1 0 1 1 2 0 1 1 2 3
Pattern 8:
1 2 3 4 5 6 7 8 9 10
Pattern Program in Java:
import java.util.Scanner;
public class Pattern_8 {
public static void main(String[] args) {
Scanner sc = new Scanner(System. in );
System.out.println("Enter the number of rows : ");
int n = sc.nextInt();
int num = 1;
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= i; j++) {
System.out.print(num+++" ");
}
System.out.println();
}
}
}Output:
Enter the number of rows : 5 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Pattern 9:
1 2 6 3 7 10 4 8 11 13 5 9 12 14 15
Pattern Program in Java:
import java.util.Scanner;
public class Pattern_9 {
public static void main(String[] args) {
Scanner sc = new Scanner(System. in );
System.out.println("Enter the number of rows : ");
int n = sc.nextInt();
for (int i = 1; i <= n; i++) {
int num = i;
for (int j = 1; j <= i; j++) {
System.out.print(num + " ");
num = num + (n - j);
}
System.out.println();
}
}
}Output:
Enter the number of rows : 5 1 2 6 3 7 10 4 8 11 13 5 9 12 14 15
Pattern 10:
1 2 4 1 3 5 2 4 6 8 1 3 5 7 9
Pattern Program in Java:
import java.util.Scanner;
public class Pattern_10 {
public static void main(String[] args) {
Scanner sc = new Scanner(System. in );
System.out.println("Enter the number of rows : ");
int n = sc.nextInt();
for (int i = 1; i <= n; i++) {
int odd = 1;
int even = 2;
for (int j = 1; j <= i; j++) {
if (i % 2 == 1) {
System.out.print(odd + " ");
odd = odd + 2;
} else {
System.out.print(even + " ");
even = even + 2;
}
}
System.out.println();
}
}
}Output:
Enter the number of rows : 5 1 2 4 1 3 5 2 4 6 8 1 3 5 7 9
Pattern 11:
1 3 2 6 5 4 10 9 8 7
Pattern Program in Java:
import java.util.Scanner;
public class Pattern_11 {
public static void main(String[] args) {
Scanner sc = new Scanner(System. in );
System.out.println("Enter the number of rows : ");
int n = sc.nextInt();
int k = 0;
for (int i = 1; i <= n; i++) {
k = k + i;
for (int j = k; j > k - i; j--) {
System.out.print(j + " ");
}
System.out.println();
}
}
}Output:
Enter the number of rows : 5 1 3 2 6 5 4 10 9 8 7 15 14 13 12 11
Pattern 12:
1 3 8 5 7 9 40 11 33
Pattern Program in Java:
import java.util.Scanner;
public class Pattern_12 {
public static void main(String[] args) {
Scanner sc = new Scanner(System. in );
System.out.println("Enter the number of rows : ");
int n = sc.nextInt();
int x = 1;
int y = 1;
int z = 1;
for (int i = 0; i < n; i++) {
for (int k = n - 1; k >= i; k--) {
System.out.print(" ");
}
for (int j = 0; j < y; j++) {
if (i == j) {
z = (x + 1) * (j + j);
z = (z == 0) ? 1 : z;
System.out.print(" " + z);
continue;
}
x = x + 2;
System.out.print(" " + x);
}
y = y + 2;
System.out.println();
}
}
}Output:
Enter the number of rows :
4
1
3 8 5
7 9 40 11 13
15 17 19 120 21 23 25I hope you will find these Pattern Programs very helpful for your preparation.If you have doubts regarding these programs comment below or directly mail us.We will happy to help you.
If you need more Pattern Programs for Practice.Please follow the Link :
Find the Data Structure related resources:
- LinkedList Implementation in Java
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- Stack implementation using Array
You may also learn these to build the Knowledge:
- Array in Java
- Array length in Java
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- Christmas Tree Pattern Program
- Memory Management in Java
- Pattern Programs in Java
- Check number is Even or Odd without using modulus operator?
