Step 6: Learn LinkedList [Single LL, Double LL, Medium, Hard Problems]›Medium Problems of LL
Check if LL is palindrome or not
MediumFunction: checkIfLlIsPalindromeOrNot()
ASCI Mission Breakdown • Simple as Hell
"Master Check if LL is palindrome or not: Take `s` (string), execute an optimal medium problems of ll strategy, and return boolean with clean edge-case handling."
Real-World Metaphor:
Think of Check if LL is palindrome or not as an everyday real-world challenge: you receive input data, inspect its elements in sequence without making unnecessary duplicate passes, and transform the collection to reach the exact target without wasting computer memory.
Interactive Visual WalkthroughFLOW-DIAGRAM
Step 1 / 3
StatusInitialized
ModeScanning
Evaluating
1. Initialize State for Check if LL is palindrome or not
Load inputs and initialize algorithmic registers.
How to Think About This (Mental Model)
Unpack the problem parameters (`s` (string)) and clarify what is given vs what must be returned.
Identify the optimal data structure or pattern (e.g. pointers, hash map, or stack) to avoid redundant recalculations.
Walk through state transitions, handle edge cases (empty collections, single items, negative numbers), and return the verified result.
Given a string `s`, implement an optimal algorithmic solution for **Check if LL is palindrome or not**.
Your solution should aim for optimal time complexity and handle all edge cases such as empty strings and character frequencies.
Examples
Example 1
Input: s = "racecar"
Output: true
Example 2
Input: s = "hello"
Output: false
Constraints
1 <= s.length <= 10^5
s consists of lowercase English letters and printable characters.
Topic Tags:
Learn LinkedList [Single LL, Double LL, Medium, Hard Problems]Medium Problems of LLcheckIfLlIsPalindromeOrNot