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Check if a String is a Palindrome

Certification: Basic Level Accuracy: 68.14% Submissions: 204 Points: 5

Write a Python program to check if a given string is a palindrome. A palindrome is a string that reads the same forwards and backwards.

Example 1
    
  
  • Input: "racecar"
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  • Output: True
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  • Explanation: 
    
      
      
    • Step 1: Reverse the string "racecar" to get "racecar".
      • 
      
    • Step 2: Compare the original string with the reversed string.
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    • Step 3: Since "racecar" == "racecar", return True.
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Example 2
    
  
  • Input: "hello"
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  • Output: False
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  • Explanation: 
    
      
      
    • Step 1: Reverse the string "hello" to get "olleh".
      • 
      
    • Step 2: Compare the original string with the reversed string.
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    • Step 3: Since "hello" != "olleh", return False.
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Constraints
    
  
  • 1 ≤ len(string) ≤ 10^6
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  • The string contains printable ASCII characters.
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  • Time Complexity: O(n), where n is the length of the string.
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  • Space Complexity: O(1)
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Hint
Solution

Solution Hints

    
  
  • Compare the string with its reverse: s == s[::-1]
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  • Use a loop to compare characters from the start and end moving towards the center.
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  • Handle edge cases where the string is empty or has only one character.
    •

The following are the steps to check if a string is a palindrome:


  • Function Definition: The function is_palindrome takes an input string.
  • Cleaning the String: It removes spaces and converts the string to lowercase.
  • Checking for Palindrome: It compares the cleaned string with its reverse.
  • Result: If both are the same, the function returns True; otherwise, False.
  • Example Output: For the input "racecar", the function returns True.

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