LeetCode 1090: Largest Values From Labels Solution

Master LeetCode problem 1090 (Largest Values From Labels), 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.

1090. Largest Values From Labels

Medium

Array Hash Table Greedy Sorting Counting

Problem Explanation

Explanation

To solve this problem, we can follow the following steps:

Create a list of tuples containing the value and label of each item.
Sort the list in descending order based on the value of the items.
Initialize a dictionary to keep track of how many items of each label we have selected.
Iterate through the sorted list of items, selecting items based on the constraints of numWanted and useLimit.
Keep track of the total value of the selected items and return the maximum sum.

Time complexity: O(n log n)
Space complexity: O(n)

Solution Code

import java.util.*;

class Solution {
    public int largestValsFromLabels(int[] values, int[] labels, int numWanted, int useLimit) {
        List<int[]> items = new ArrayList<>();
        for (int i = 0; i < values.length; i++) {
            items.add(new int[]{values[i], labels[i]});
        }

        Collections.sort(items, (a, b) -> b[0] - a[0]);

        Map<Integer, Integer> labelCount = new HashMap<>();
        int totalValue = 0;
        int selected = 0;

        for (int[] item : items) {
            int value = item[0];
            int label = item[1];

            if (labelCount.getOrDefault(label, 0) < useLimit && selected < numWanted) {
                totalValue += value;
                labelCount.put(label, labelCount.getOrDefault(label, 0) + 1);
                selected++;
            }
        }

        return totalValue;
    }
}

Try It Yourself

Loading code editor...

Frequently Asked Questions

How to solve LeetCode 1090 (Largest Values From Labels)?

This page provides optimized solutions for LeetCode problem 1090 (Largest Values From Labels) 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 1090 (Largest Values From Labels)?

The time complexity for LeetCode 1090 (Largest Values From Labels) varies by solution. Check the detailed explanation section for specific complexities in Java, C++, and Python implementations.

Can I run code for LeetCode 1090 on DevExCode?

Yes, DevExCode provides an interactive code editor where you can write, test, and run your code for LeetCode 1090 in Java, C++, or Python.

Back to LeetCode Solutions