#1282

Group the People Given the Group Size They Belong To

pupil · 400 · lc medium +24 · verified · 87.5% accepted · 3,157 likes · top 98%

Description

n people (labeled 0 to n - 1) must be divided into groups. The array groupSizes specifies the required group size for each person: person i must belong to a group of exactly groupSizes[i] members.

Assign every person to exactly one group such that each group has the correct size. Return any valid assignment as a list of groups. A valid solution is guaranteed to exist.

Example 1:

Input: groupSizes = [3,3,3,3,3,1,3]

Output: [[5],[0,1,2],[3,4,6]]

Explanation:

The first group is [5]. The size is 1, and groupSizes[5] = 1.

The second group is [0,1,2]. The size is 3, and groupSizes[0] = groupSizes[1] = groupSizes[2] = 3.

The third group is [3,4,6]. The size is 3, and groupSizes[3] = groupSizes[4] = groupSizes[6] = 3.

Other possible solutions are [[2,1,6],[5],[0,4,3]] and [[5],[0,6,2],[4,3,1]].

Example 2:

Input: groupSizes = [2,1,3,3,3,2]

Output: [[1],[0,5],[2,3,4]]

Code

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class Solution:
    def groupThePeople(self, groupSizes: List[int]) -> List[List[int]]:

class Solution:
    def groupThePeople(self, groupSizes: List[int]) -> List[List[int]]: