#23 Python Tutorial for Beginners | Printing Patterns in Python
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In this lecture we will learn:
How to implement the logic for pattern printing?
Pattern printing through python
Print the pattern of a square
Print the pattern of the right triangle and reverse right-triangle
Different approaches to printing a pattern
#1
Pattern printing improves logical thinking capability.
Programming is all about solving the problem, we have to understand the problem statement and wrote code for it.
A pattern can be printed in many ways.
We can print multiple hashes(#) in a single statement as a string.
If you are allowed to print only hash in a statement at a time, then you have to write the same print statement multiple times.
On writing a statement multiple times, it will give an output in a column.
To convert a column output into a row format, we can use the end=" "parameter in every statement.
To will restrict the cursor to move on a new line and hashes(#) will be printed in a single row.
#2
Instead of writing the same code multiple times, we can use a for a loop.
For a range(n) in a for loop, it will start from 0 and end at (n-1).
We can use two loops, for printing two rows separated by a new line.
For printing multiple rows, we have to write the same for loop code repeatedly.
So, we can write the above for loop block inside another outer loop.
In nested loops, an outer loop contains a variable that represents the number of rows and an inner loop contains a variable that represents the number of columns.
#3
We can apply the concept to different patterns in a similar way.
e.g., for printing a right -triangle, we can restrict the inner loop till the value of a number of rows.
For the reverse of the right triangle, we can restrict the inner loop till (n-i), where i is the number of rows.
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In this video we will see:
Printing patterns
Using loop
For loop
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