How to realize the function of Card grouping in leecode

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nine hundred and fourteen。 Card grouping

Https://leetcode-cn.com/problems/x-of-a-kind-in-a-deck-of-cards/

Given a deck of cards, each card has an integer written on it.

At this point, you need to select a number X so that we can divide the whole deck into one or more groups according to the following rules:

Each group has X cards.

All the cards in the group have the same integer written on them.

Return true only if you have the optional X > = 2.

Example 1: input: (1) true explanation: the feasible grouping is [1meme 1], [2recorder 2], [3Perry 3], [4p4] example 2: input: [1meme 1meme 1meme 2pm 2pyrm 3] output: false explanation: there are no groups that meet the requirements. Example 3: input: [1] output: false explanation: there are no packets that meet the requirements. Example 4: input: [1Reagen1] output: true explanation: feasible grouping is [1Reagen1] example 5: input: [1Perry 1magent2magin2] output: true explanation: feasible grouping is [1magin1], [2mag2], [2mag2] hint: 1