Square frame pattern is designed in accordance to the number of rows user has entered.
Program to print the following pattern. To accomplish this task, we need to create two loops and the 2nd loop is to be executed according to the first loop. The first loop is responsible for printing the line breaks whereas the second loop is responsible for printing the stars (.). Start; Let i be an integer number. 1 3 2 6 5 4 10 9 8 7 15 14 13 12 11. Post navigation. JAVA program to count number of vowels, consonants, digits,white spaces and special characters in a given string. JAVA Program for triangle number pattern 1. Disqus Recommendations.
In this java program, the user is asked to enter number of rows. It displays a hallow square based on number of rows.
Algorithm:
Step 1: Start.
Step 2: Read number of rows to be printed. Store it in some variable, say n.
Step 3: To iterate through rows, run an outer loop from 1 to n. For that define a for loop.
Step 4: To iterate through columns, run an inner loop from 1 to n. Define a for loop.
Step 5: Inside inner loop print star for the first and last rows and first and last column. Otherwise enter space.
Step 6: Stop.
Source code:
In the above code snippet, the first for loop is for row and the second for loop for columns.
Let's see the execution of the code step by step, for n=4 (the number of rows we want to print).
Iteration 1:
The first print statement prints a star at the first row and the second println statement prints the spaces and throws the cursor at the next line.
Now the value of i and j is increased to 1.
Iteration 2:
The first print statement prints two stars at the second row and the second println statement prints the spaces and throws the cursor at the next line.
Now the value of i and j is increased to 2.
Iteration 3:
The first print statement prints three stars at the third row and the second println statement prints the spaces and throws the cursor at the next line.
Now the value of i and j is increased to 3.
Iteration 4:
The first print statement prints four stars at the fourth row and the second println statement prints the spaces and throws the cursor at the next line.
Now the value of i and j is increased to 4.
The execution of the program will terminate when the value of i will be equal to the number of rows.
Star Pattern
1. Right Triangle Star Pattern
Output:
2. Left Triangle Star Pattern
Output:
3. Pyramid Star Pattern
Output:
4. Diamond Shape Pattern
Output:
5. Downward Triangle Star Pattern
Output:
6. Mirrored Right Triangle Star Pattern
Output:
7. Reverse Pyramid Star Pattern
Output:
8. Right Down Mirror Star Pattern
Output:
9. Right Pascal's Triangle
Output:
10. Left Pascal's Triangle
Output:
11. Sandglass Star Pattern
Output:
12. Alphabet Star Pattern
Output:
13. Triangle Star Pattern
Output:
14. Down Triangle Pattern
Output:
15. Diamond Star Pattern
Output:
Number Pattern
1. Pattern-1
Output:
2. Pattern-2
Output:
3. Pattern-3
Output:
4. Pattern-4
Output:
5. Pattern-5
Output:
6. Pattern-6
Output:
7. Pattern-7
Output:
8. Pattern-8
Output:
9. Pattern-9
Output:
10. Pattern-10
Output:
11. Pattern-11
Output:
12. Pattern-12
Output:
13. Pattern-13
Output:
14. Pattern-14
Output:
15. Pattern-15
Output:
16. Pattern-16
Output:
17. Pattern-17
Output:
18. Pattern-18
Output:
19. Pattern-19
Output:
20. Pattern-20
Output:
21. Pattern-21
Output:
Character Pattern
1. Right Triangle Alphabetic Pattern
Output:
2. Repeating Alphabet Pattern
Output:
3. K-shape Alphabet Pattern
Print Number Plates
Output:
4. Triangle Character Pattern
Output:
5. Diamond Character Pattern
Java Program To Print Number Pattern
Output: