g1201_1300.s1282_group_the_people_given_the_group_size_they_belong_to

Class Solution

java.lang.Object

g1201_1300.s1282_group_the_people_given_the_group_size_they_belong_to.Solution

public class Solution
extends Object

1282 - Group the People Given the Group Size They Belong To.

Medium

There are n people that are split into some unknown number of groups. Each person is labeled with a unique ID from 0 to n - 1.

You are given an integer array groupSizes, where groupSizes[i] is the size of the group that person i is in. For example, if groupSizes[1] = 3, then person 1 must be in a group of size 3.

Return a list of groups such that each person i is in a group of size groupSizes[i].

Each person should appear in exactly one group , and every person must be in a group. If there are multiple answers, return any of them. It is guaranteed that there will be at least one valid solution for the given input.

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

Constraints:

• groupSizes.length == n
• 1 <= n <= 500
• 1 <= groupSizes[i] <= n

Constructor Summary

Constructors

Constructor and Description
Solution()

Method Summary

Modifier and Type	Method and Description
List<List<Integer>>	groupThePeople(int[] groupSizes)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Solution

public Solution()

Method Detail

groupThePeople

public List<List<Integer>> groupThePeople(int[] groupSizes)