LeetCode 3460: Longest Common Prefix After at Most One Removal Solution

Master LeetCode problem 3460 (Longest Common Prefix After at Most One Removal), 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.

3460. Longest Common Prefix After at Most One Removal

Medium

Two Pointers String

Problem Explanation

Explanation:

To find the longest common prefix after at most one removal, we can iterate through each character of the input strings and check if removing that character will result in a common prefix. We can do this by comparing the prefixes before and after removing the character.

Algorithm:

Iterate through each character of the first string.
Check if removing the current character from the first string results in a common prefix with the second string.
If removing the current character results in a common prefix, update the maximum common prefix found so far.
Repeat the process for each character of the first string.
Return the maximum common prefix found.

Time Complexity:

The time complexity of this algorithm is O(n), where n is the length of the input strings.

Space Complexity:

The space complexity of this algorithm is O(1) as we are using constant extra space.

: :

Solution Code

class Solution {
    public String longestCommonPrefix(String s, String t) {
        if (s.equals(t)) {
            return s;
        }
        
        int n = Math.min(s.length(), t.length());
        for (int i = 0; i < n; i++) {
            if (s.charAt(i) != t.charAt(i)) {
                return s.substring(0, i) + s.substring(i + 1);
            }
        }
        
        return s.substring(0, n - 1);
    }
}

Try It Yourself

Loading code editor...

Frequently Asked Questions

How to solve LeetCode 3460 (Longest Common Prefix After at Most One Removal)?

This page provides optimized solutions for LeetCode problem 3460 (Longest Common Prefix After at Most One Removal) 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 3460 (Longest Common Prefix After at Most One Removal)?

The time complexity for LeetCode 3460 (Longest Common Prefix After at Most One Removal) varies by solution. Check the detailed explanation section for specific complexities in Java, C++, and Python implementations.

Can I run code for LeetCode 3460 on DevExCode?

Yes, DevExCode provides an interactive code editor where you can write, test, and run your code for LeetCode 3460 in Java, C++, or Python.

Back to LeetCode Solutions