LeetCode 2576: Find the Maximum Number of Marked Indices Solution

Master LeetCode problem 2576 (Find the Maximum Number of Marked Indices), 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.

2576. Find the Maximum Number of Marked Indices

Medium

Array Two Pointers Binary Search Greedy Sorting

Problem Explanation

Explanation:

Algorithmic idea:
1. Sort the array in non-decreasing order.
2. Iterate through the sorted array and for each element, find the maximum number of marked indices that can be obtained by considering it as the larger number in the operation.
3. Keep track of the maximum number of marked indices obtained so far.
Step-by-step iterations:
1. Sort the array: [2, 3, 4, 5]
2. For element 2: No valid operation possible.
3. For element 3: Pick 3 and 2 -> Mark indices 1 and 0
4. For element 4: Pick 4 and 3 -> Mark indices 2 and 1
5. For element 5: No valid operation possible.
Time complexity: O(n log n) where n is the number of elements in the array due to sorting.
Space complexity: O(n) for storing the sorted array.

Solution Code

class Solution {
    public int maxMarkedIndices(int[] nums) {
        Arrays.sort(nums);
        int maxMarked = 0;
        for (int i = 1; i < nums.length; i++) {
            for (int j = 0; j < i; j++) {
                if (2 * nums[j] <= nums[i]) {
                    maxMarked = Math.max(maxMarked, i - j + 1);
                    break;
                }
            }
        }
        return maxMarked;
    }
}

Try It Yourself

Loading code editor...

Frequently Asked Questions

How to solve LeetCode 2576 (Find the Maximum Number of Marked Indices)?

This page provides optimized solutions for LeetCode problem 2576 (Find the Maximum Number of Marked Indices) 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 2576 (Find the Maximum Number of Marked Indices)?

The time complexity for LeetCode 2576 (Find the Maximum Number of Marked Indices) varies by solution. Check the detailed explanation section for specific complexities in Java, C++, and Python implementations.

Can I run code for LeetCode 2576 on DevExCode?

Yes, DevExCode provides an interactive code editor where you can write, test, and run your code for LeetCode 2576 in Java, C++, or Python.

Back to LeetCode Solutions