What is the time complexity of LeetCode 2910. Minimum Number of Groups to Create a Valid Assignment?

The Python solution on this page runs in O(n).

What is the space complexity of LeetCode 2910. Minimum Number of Groups to Create a Valid Assignment?

The Python solution on this page uses O(n) auxiliary space.

Minimum Number of Groups to Create a Valid Assignment — LeetCode 2910 Python Solution

MediumGreedyArrayHash Table

Problem: #2910
Pattern: Greedy
Reading time: 2 min
Source: leetcode.com

The problem

You are given a collection of numbered balls and instructed to sort them into boxes for a nearly balanced distribution. There are two rules you must follow: Balls with the same box must have the same value.

Python solution

Python

class Solution:
    def minGroupsForValidAssignment(self, nums: List[int]) -> int:
        cnt = Counter(nums)
        for k in range(min(cnt.values()), 0, -1):
            ans = 0
            for v in cnt.values():
                if v // k < v % k:
                    ans = 0
                    break
                ans += (v + k) // (k + 1)
            if ans:
                return ans

Complexity

Measure	Complexity
Time	O(n)
Space	O(n) auxiliary

Pattern: Greedy

Take the locally best option every time — when you can prove that never costs you later. LeetCode 2910. Minimum Number of Groups to Create a Valid Assignment is filed here because LeetCode tags it Greedy, which is the vocabulary this hub collects.

The greedy guide has the Python template for the pattern and the 346 LeetCode problems that use it.

Frequently asked questions

How hard is LeetCode 2910. Minimum Number of Groups to Create a Valid Assignment?: LeetCode 2910. Minimum Number of Groups to Create a Valid Assignment is rated Medium on LeetCode.
What is the time complexity of LeetCode 2910. Minimum Number of Groups to Create a Valid Assignment?: The Python solution on this page runs in O(n).
What is the space complexity of LeetCode 2910. Minimum Number of Groups to Create a Valid Assignment?: The Python solution on this page uses O(n) auxiliary space.
What topics does LeetCode 2910. Minimum Number of Groups to Create a Valid Assignment cover?: LeetCode 2910. Minimum Number of Groups to Create a Valid Assignment is tagged Greedy, Array and Hash Table on LeetCode.