We have successfully completed 10 days in our 100 days Coding journey on this most Special Day of 2011 - our ICT lifted the World Cup after 28 loooong years under Captain Cool's Captaincy! Kudos to us as well as our Indian team! :)
So, here are 10 pattern program for practice!
1. Triangle Pattern
** ** * ** * * ** * * * ** * * * * ** * * * * * *
Python
def trianglePattern(n):
for i in range(1, n + 1):
print("* " * i)
trianglePattern(7)
Java
public class TrianglePattern {
public static void main(String[] args) {
int n = 7;
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= i; j++) {
System.out.print("* ");
}
System.out.println();
}
}
}
2. Pyramid Pattern
*
***
*****
*******
*********
***********
*************Python
def pyramidPattern(n):
for i in range(0, n):
print(" " * (n - i - 1) + "*" * (2 * i + 1))
pyramidPattern(7)
Java
public class PyramidPattern {
public static void main(String[] args) {
int n = 7;
for (int i = 1; i <= n; i++) {
for (int j = i; j < n; j++) {
System.out.print(" ");
}
for (int k = 1; k <= (2 * i - 1); k++) {
System.out.print("*");
}
System.out.println();
}
}
}
3. Diamond Pattern
*
***
*****
*******
*********
***********
*************
***********
*********
*******
*****
***
*Python
def diamondPattern(n):
for i in range(1, n + 1):
print(" " * (n - i) + "*" * (2 * i - 1))
for i in range(n - 1, 0, -1):
print(" " * (n - i) + "*" * (2 * i - 1))
diamondPattern(7)
Java
public class DiamondPattern {
public static void main(String[] args) {
int n = 7;
int s = n - 1;
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= s; j++) {
System.out.print(" ");
}
s--;
for (int j = 1; j <= 2 * i - 1; j++) {
System.out.print("*");
}
System.out.println();
}
s = 1;
for (int i = 1; i <= n - 1; i++) {
for (int j = 1; j <= s; j++) {
System.out.print(" ");
}
s++;
for (int j = 1; j <= 2 * (n - i) - 1; j++) {
System.out.print("*");
}
System.out.println();
}
}
}
4. Hollow Rectangle Pattern
* * * * * * * * * * * * * ** ** ** ** ** ** * * * * * * * * * * * * *
def hollowRectanglePattern(r, c):
for i in range(r):
for j in range(c):
if i == 0 or i == r - 1 or j == 0 or j == c - 1:
print("* ", end="")
else:
print(" ", end="")
print()
hollowRectanglePattern(7, 14)
public class HollowRectanglePattern {
public static void main(String[] args) {
int r = 7;
int c = 14;
for (int i = 1; i <= r; i++) {
for (int j = 1; j <= c; j++) {
if (i == 1 || i == r || j == 1 || j == c) {
System.out.print("* ");
} else {
System.out.print(" ");
}
}
System.out.println();
}
}
}
5. Hollow Triangle Pattern
* * * * * * * * * * * * * * * * * *
Python
def hollowTrianglePattern(n):
for i in range(1, n + 1):
for j in range(1, n + 1):
if j == n or i == n or i + j == n + 1:
print("*", end=" ")
else:
print(" ", end=" ")
print()
hollowTrianglePattern(7)
Java
public class HollowTrianglePattern {
public static void main(String[] args) {
int n = 7;
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= n; j++) {
if (j == n || i == n || i + j == n + 1) {
System.out.print("* ");
} else {
System.out.print(" ");
}
}
System.out.println();
}
}
}
6. Cross Pattern
* *
* *
* *
*
* *
* *
* * Python
def crossPattern(n):
for i in range(1, n + 1):
for j in range(1, n + 1):
if j == i or j == n - i + 1:
print("*", end=" ")
else:
print(" ", end=" ")
print()
crossPattern(7)
Java
public class CrossPattern {
public static void main(String[] args) {
int n = 7;
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= n; j++) {
if (j == i || j == n - i + 1)
System.out.print("* ");
else
System.out.print(" ");
}
System.out.println();
}
}
}
7. Floyd's Triangle Pattern
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
Python
def floydsTrianglePattern(n):
num = 1
for i in range(1, n + 1):
for j in range(1, i + 1):
print(num, end=" ")
num += 1
print()
floydsTrianglePattern(7)
Java
public class FloydsTriangle {
public static void main(String[] args) {
int n = 7;
int num = 1;
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= i; j++) {
System.out.print(num + " ");
num++;
}
System.out.println();
}
}
}
8. Pascal's Triangle Pattern
1 1 1 1 2 1 1 3 3 1 1 4 6 4 1 1 5 10 10 5 1 1 6 15 20 15 6 1
Python
def pascalTrianglePattern(n):
for i in range(n):
num = 1
print(" " * (n - i), end="")
for j in range(0, i + 1):
print("{:4}".format(num), end="")
num = num * (i - j) // (j + 1)
print()
pascalTrianglePattern(7)
Java
public class PascalTrianglePattern {
public static void main(String[] args) {
int n = 7;
for (int i = 0; i < n; i++) {
int num = 1;
System.out.format("%" + (n - i) * 2 + "s", "");
for (int j = 0; j <= i; j++) {
System.out.format("%4d", num);
num = num * (i - j) / (j + 1);
}
System.out.println();
}
}
}
9. Number Pattern
1 1 2 1 2 3 1 2 3 4 1 2 3 4 5 1 2 3 4 5 6 1 2 3 4 5 6 7
Python
def numberPattern(n):
for i in range(1, n + 1):
for j in range(1, i + 1):
print(j, end=" ")
print()
numberPattern(7)
Java
public class NumberPattern {
public static void main(String[] args) {
int n = 7;
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= i; j++) {
System.out.print(j + " ");
}
System.out.println();
}
}
}
10. Alphabet Pattern
A B C D E F G H I J K L M N O P Q R S T U
Python
def alphabeticPattern(n):
ch = 'A'
for i in range(1, n + 1):
for j in range(1, i + 1):
print(ch, end=" ")
ch = chr(ord(ch) + 1)
print()
alphabeticPattern(6)
Java
public class AlphabeticPattern {
public static void main(String[] args) {
int n = 6;
char ch = 'A';
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= i; j++) {
System.out.print(ch + " ");
ch++;
}
System.out.println();
}
}
}
Try exploring more Pattern Programs!
Explore the symmetrical shapes for the above given sample Pattern Programs.
Try using Scanner class and int(input()) to get user input for the number of rows and columns.
Explore more patterns! Wishing to hear from you learners about more pattern ideas in the comments!
Happy Coding dear Explorers!! :)
Hi Mam, I think learning about patterns are very fun and interesting because the output is fun to watch with emojis.
ReplyDeleteCoding is a sea! Let's dive into the same and get lots and lots of precious things! Let's explore more! 🥰
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