LeetCode 1910: Remove All Occurrences of a Substring Solution

Master LeetCode problem 1910 (Remove All Occurrences of a Substring), 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.

1910. Remove All Occurrences of a Substring

Medium

String Stack Simulation

Problem Explanation

Explanation:

To solve this problem, we can iterate through the string s and keep removing occurrences of the substring part until there are no more occurrences left. We can achieve this by using the indexOf() method to find the index of the first occurrence of part. If the index is found, we remove the substring at that index. We repeat this process until no more occurrences of part are present in s.

Algorithm:

Initialize a variable index to store the index of the first occurrence of part in s.
While index is not equal to -1, remove the substring part at the index index in s.
Update the value of index to the index of the next occurrence of part.
Repeat steps 2 and 3 until no more occurrences of part are found in s.
Return the modified string s.

Time Complexity:

The time complexity of this approach is O(n*m), where n is the length of the string s and m is the length of the substring part. In the worst case, we may have to iterate through the entire string s multiple times to remove all occurrences of part.

Space Complexity:

The space complexity of this approach is O(n), where n is the length of the string s. This is because we are modifying the string s in-place without using any additional data structures.

Solution Code

class Solution {
    public String removeOccurrences(String s, String part) {
        int index = s.indexOf(part);
        while (index != -1) {
            s = s.substring(0, index) + s.substring(index + part.length());
            index = s.indexOf(part);
        }
        return s;
    }
}

Try It Yourself

Loading code editor...

Frequently Asked Questions

How to solve LeetCode 1910 (Remove All Occurrences of a Substring)?

This page provides optimized solutions for LeetCode problem 1910 (Remove All Occurrences of a Substring) 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 1910 (Remove All Occurrences of a Substring)?

The time complexity for LeetCode 1910 (Remove All Occurrences of a Substring) varies by solution. Check the detailed explanation section for specific complexities in Java, C++, and Python implementations.

Can I run code for LeetCode 1910 on DevExCode?

Yes, DevExCode provides an interactive code editor where you can write, test, and run your code for LeetCode 1910 in Java, C++, or Python.

Back to LeetCode Solutions