LeetCode 1231: Divide Chocolate Solution

Master LeetCode problem 1231 (Divide Chocolate), 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.

1231. Divide Chocolate

Hard

Array Binary Search

Problem Explanation

Explanation:

The problem "Divide Chocolate" can be solved using binary search. Given an array of integers representing the sweetness levels of each piece of chocolate and an integer k representing the number of people, the task is to find the maximum integer m such that you can split the chocolate into k non-empty pieces and distribute at most m sweetness levels to each person.

To solve this problem, we can use binary search to find the maximum possible sweetness level that can be achieved. We start with a lower bound of 1 and an upper bound of the sum of all sweetness levels. Then, we repeatedly check if it is possible to distribute the chocolate with a certain sweetness level to each person within the given constraints using binary search. :

Solution Code

class Solution {
    public int maximizeSweetness(int[] sweetness, int K) {
        int left = 1, right = Arrays.stream(sweetness).sum() / (K + 1);
        
        while (left < right) {
            int mid = (left + right + 1) / 2;
            int sum = 0, cuts = 0;
            for (int sweet : sweetness) {
                sum += sweet;
                if (sum >= mid) {
                    cuts++;
                    sum = 0;
                }
            }
            
            if (cuts >= K + 1) {
                left = mid;
            } else {
                right = mid - 1;
            }
        }
        
        return left;
    }
}

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