From Basics to Brilliance: Pattern Printing with Nested Loops

Nested loops

A nested loop means putting one loop inside another loop.
This is useful when you're working with grids, tables, patterns, or multi-level data.

Syntax

Outer_loop Expression:
    Inner_loop Expression
        Statement inside inner_loop
    Statement inside Outer_loop

example:

( note→ nested loops me for ke andr for, for ke andr while, while ke andr while, while ke and for laga sakte hai you can check but in this article i use only for inside for until i do not required while loop. )

Lets understand nested loop using pattern printing

🔴print square n×n using stars

n = int(input("enter the value of rows or column"))
for i in range(1,n+1):
    for j in range(1,n+1):
        print("*",end="")
    print()

🔴print tringle having n numbers of rows using stars

n = int(input("enter number of rows in triangle : "))
for i in range(n):
    for j in range(i+1):
        print("*",end="")
    print()

⭐⭐⭐ There is also one more method. Do you know about string multiplication in Python?

If we multiply a string by a number, the string is repeated that many times.

For example:

print("*" * 5)

This will output:

*****

You can use this to create patterns like triangles and pyramids easily.

another method

note→ aap khud se sochiye ye output kaise aya.

🔴print pyramid having n number of rows using stars

🔴Print the pattern shown in the image below.

note→ ap apne sochiye ye kaise hua. hint → odd row number(i) ke liye number and even row number(i) ke liye alphabets print krna hai.

🔴Print the pattern shown in the image below.

note→ apne se soche ki maine code kaise likha. Hint → no of rows and column = n hai aur (n+1)/2 == i,j pr hi “+” print ho rha hai.

🔴Print the pattern shown in the image below.

note→ main bs 1st ka code explain karunga code kaise likha kya kya socha baki ap khud se samajhne ki kosis kr ki code kaise likha hoga maine kya ho rha hai.