LeetCode 1616: Split Two Strings to Make Palindrome Solution

Master LeetCode problem 1616 (Split Two Strings to Make Palindrome), a medium challenge, with our optimized solutions in Java, C++, and Python. Explore detailed explanations, test your code in our interactive editor, and prepare for coding interviews.

1616. Split Two Strings to Make Palindrome

Medium

Two Pointers String

Problem Explanation

Explanation:

To solve this problem, we can iterate over all possible splitting points in the strings a and b, checking if either aprefix + bsuffix or bprefix + asuffix forms a palindrome. We can iterate from index 0 to length-1, splitting at each index.

For each splitting point, we check if the combined strings form a palindrome by comparing characters from both ends towards the middle. If we find a mismatch, we move on to the next splitting point.

This algorithm has a time complexity of O(n) where n is the length of the strings a and b, as we iterate through the strings once. The space complexity is O(1) as we use constant extra space.

Solution Code

class Solution {
    public boolean checkPalindromeFormation(String a, String b) {
        return checkPalindrome(a, b) || checkPalindrome(b, a);
    }
    
    private boolean checkPalindrome(String a, String b) {
        int i = 0, j = a.length() - 1;
        while (i < j && a.charAt(i) == b.charAt(j)) {
            i++;
            j--;
        }
        return isPalindrome(a, i, j) || isPalindrome(b, i, j);
    }
    
    private boolean isPalindrome(String s, int i, int j) {
        while (i < j) {
            if (s.charAt(i) != s.charAt(j)) {
                return false;
            }
            i++;
            j--;
        }
        return true;
    }
}

Try It Yourself

Loading code editor...

Frequently Asked Questions

How to solve LeetCode 1616 (Split Two Strings to Make Palindrome)?

This page provides optimized solutions for LeetCode problem 1616 (Split Two Strings to Make Palindrome) in Java, C++, and Python, along with a detailed explanation and an interactive code editor to test your code.

What is the time complexity of LeetCode 1616 (Split Two Strings to Make Palindrome)?

The time complexity for LeetCode 1616 (Split Two Strings to Make Palindrome) varies by solution. Check the detailed explanation section for specific complexities in Java, C++, and Python implementations.

Can I run code for LeetCode 1616 on DevExCode?

Yes, DevExCode provides an interactive code editor where you can write, test, and run your code for LeetCode 1616 in Java, C++, or Python.

Back to LeetCode Solutions