LeetCode 2209: Minimum White Tiles After Covering With Carpets Solution
Master LeetCode problem 2209 (Minimum White Tiles After Covering With Carpets), a hard 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.
2209. Minimum White Tiles After Covering With Carpets
Problem Explanation
Explanation:
To minimize the number of white tiles visible after covering the floor with black carpets, we can iterate through the floor and for each possible placement of the carpets, calculate the number of white tiles still visible. We can do this by simulating the placement of carpets and updating the count of white tiles visible accordingly.
Algorithmic Idea:
- Iterate through the floor string and for each starting index i, simulate placing a carpet of length carpetLen starting from index i.
- Update the count of white tiles visible in each iteration.
- Keep track of the minimum count of white tiles visible across all placements.
- Return the minimum count as the result.
Time Complexity:
The time complexity of this approach is O(n * numCarpets) where n is the length of the floor string.
Space Complexity:
The space complexity is O(1) as we are not using any additional data structures to solve the problem.
:
Solution Code
class Solution {
public int minWhiteTiles(String floor, int numCarpets, int carpetLen) {
int minWhiteTiles = Integer.MAX_VALUE;
for (int i = 0; i <= floor.length() - carpetLen; i++) {
int whiteTiles = 0;
for (int j = i; j < i + carpetLen; j++) {
if (floor.charAt(j) == '1') {
whiteTiles++;
}
}
minWhiteTiles = Math.min(minWhiteTiles, whiteTiles);
}
return minWhiteTiles;
}
}Try It Yourself
Loading code editor...
Related LeetCode Problems
Frequently Asked Questions
How to solve LeetCode 2209 (Minimum White Tiles After Covering With Carpets)?
This page provides optimized solutions for LeetCode problem 2209 (Minimum White Tiles After Covering With Carpets) 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 2209 (Minimum White Tiles After Covering With Carpets)?
The time complexity for LeetCode 2209 (Minimum White Tiles After Covering With Carpets) varies by solution. Check the detailed explanation section for specific complexities in Java, C++, and Python implementations.
Can I run code for LeetCode 2209 on DevExCode?
Yes, DevExCode provides an interactive code editor where you can write, test, and run your code for LeetCode 2209 in Java, C++, or Python.