LeetCode 1119: Remove Vowels from a String Solution

Master LeetCode problem 1119 (Remove Vowels from a String), a easy 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.

1119. Remove Vowels from a String

Easy

String

Problem Explanation

Explanation:

To solve this problem, we can iterate through each character in the input string and check if it is a vowel. If it is not a vowel, we append it to a new string. Finally, we return the new string without the vowels.

We can define a set of all vowels for easy lookup.
Iterate through each character in the input string and check if it is a vowel.
If the character is not a vowel, append it to the result string.
Return the result string without vowels.

Time Complexity: O(n), where n is the length of the input string.

Space Complexity: O(n), where n is the length of the input string.

Solution Code

class Solution {
    public String removeVowels(String S) {
        Set<Character> vowels = new HashSet<>(Arrays.asList('a', 'e', 'i', 'o', 'u'));
        StringBuilder result = new StringBuilder();
        
        for (char c : S.toCharArray()) {
            if (!vowels.contains(c)) {
                result.append(c);
            }
        }
        
        return result.toString();
    }
}

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Frequently Asked Questions

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What is the time complexity of LeetCode 1119 (Remove Vowels from a String)?

The time complexity for LeetCode 1119 (Remove Vowels from a String) varies by solution. Check the detailed explanation section for specific complexities in Java, C++, and Python implementations.

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