LeetCode 2414: Length of the Longest Alphabetical Continuous Substring Solution

LeetCode 2414 Solution Explanation

Explanation:

To solve this problem, we can iterate through the input string s and keep track of the current alphabetical continuous substring's length. We reset the length whenever we encounter a character that breaks the alphabetical order. We then update the maximum length as we iterate through the string.

Algorithm:

Initialize maxLen and currLen to 1.
Iterate through the input string s starting from the second character.
If the current character is in alphabetical order with the previous character, increment currLen.
If not, update maxLen if currLen is greater and reset currLen to 1.
Return the maximum length found.

Time Complexity:

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

Space Complexity:

The space complexity is O(1) since we are using only a constant amount of extra space.

LeetCode 2414 Solutions in Java, C++, Python

class Solution {
    public int longestAlphabeticalContinuousSubstring(String s) {
        if (s.length() == 0) return 0;
        
        int maxLen = 1;
        int currLen = 1;
        
        for (int i = 1; i < s.length(); i++) {
            if (s.charAt(i) - s.charAt(i - 1) == 1) {
                currLen++;
            } else {
                maxLen = Math.max(maxLen, currLen);
                currLen = 1;
            }
        }
        
        return Math.max(maxLen, currLen);
    }
}

Interactive Code Editor for LeetCode 2414

Improve Your LeetCode 2414 Solution

Use the editor below to refine the provided solution for LeetCode 2414. Select a programming language and try the following:

Add import statements if required.
Optimize the code for better time or space complexity.
Add test cases to validate edge cases and common scenarios.
Handle error conditions or invalid inputs gracefully.
Experiment with alternative approaches to deepen your understanding.

Click "Run Code" to execute your solution and view the output. If errors occur, check the line numbers and debug accordingly. Resize the editor by dragging its bottom edge.

Loading editor...

Sign in with Google

LeetCode 2414: Length of the Longest Alphabetical Continuous Substring