leetcode914

    public class Solution
    {
        public bool HasGroupsSizeX(int[] deck)
        {
            var len = deck.Length;
            for (int i = 2; i <= len; i++)//i表示每组的卡牌数量
            {
                if (len % i != 0)
                {
                    continue;
                }
                else
                {
                    var pati = len / i;//分组
                    var list = deck.OrderBy(x => x).ToList();
                    var num = 0;
                    for (int j = 0; j < pati; j++)
                    {
                        var patlist = list.Skip(j * i).Take(i).ToList();
                        var gp = patlist.GroupBy(x => x).Count();
                        if (gp == 1)
                        {
                            num++;
                        }
                        else
                        {
                            break;
                        }
                    }
                    if (num == pati)
                    {
                        return true;
                    }
                }
            }
            return false;
        }
    }