Interactive Python Lab

Palindrome Check

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Replay·Step by step

Challenge·Guided prompts

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Data Flow Pipeline

beginner Track

Loop Explorer

Linear Search

Factorial (Iterative)

Fibonacci (Iterative)

Count Occurrences

Reverse a List

Palindrome Check

Find Min & Max

Sum & Average

FizzBuzz

Samjhein

Line 1

s = "madam" — a 5-character string.

Yeh approach kyun?

madam is a classic palindrome example. Strings in Python are immutable sequences of characters — every operation on a string creates a new one.

Structured Explanation

Overview

Palindrome wo string hai jo ulti padhne par bhi same ho — "racecar", "madam", "level".

Analogy

Jaise "MADAM" — seedha padho ya ulta, same rahega. Mirror image jaisa word.

Step-by-step

String reverse karo
Original se compare karo
Case aur spaces ignore karo typically
Two-pointer se efficiency badhao

Visual

s = "racecar" s == s[::-1] # True # Ignore spaces, case: s = "race a car" clean = "".join(s.lower().split()) clean == clean[::-1] # False

Common mistakes

Case sensitivity — "Racecar" uppercase se fail ho sakta hai
Spaces aur punctuation — usually strip/ignore karte hain
Number palindromes — 121 palindrome hai

Practice questions

Any string ke liye palindrome checker banao
Longest palindromic substring nikalo

Complexity

Time

O(n)

Space

O(n)

Complexity Overview

O(1)

O(log n)

O(n)timespace

O(n log n)

O(n²)

n = 8range 1-20

N = 8 pe

Complexity	Operations
O(1)	1
O(log n)	3
O(n)	8
O(n log n)	24
O(n²)	64

Challenge

Check karo ki 'racecar', 'hello', 'A man a plan a canal Panama' palindrome hain.

Hint

Last wale ke liye lowercase karo aur spaces/punctuation hatao. Phir two-pointer approach use karo.

Code Studio

Palindrome Check

Monaco Ready

Python ready hai

lesson.pyline 1

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Output Console

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Real-World Applications

1

DNA sequence analysis (palindromic sequences in genetics)

2

Word puzzles and games

3

Input validation (e.g., palindromic part numbers)

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