返回一个int数组，其中包含每个内部数组c#的元素数

using System;

public class Program
{
    public static void Main(string[] args)
    {
        int[][] parentArray = new int[][] {
            new int[] { 1, 2, 3 },
            new int[] { 4, 5 },
            new int[] { 6, 7, 8, 9 }
        };

        int[] result = GetElementCounts(parentArray);
        foreach (int count in result)
        {
            Console.WriteLine(count);
        }
    }

    public static int[] GetElementCounts(int[][] parentArray)
    {
        int[] counts = new int[parentArray.Length];

        for (int i = 0; i < parentArray.Length; i++)
        {
            counts[i] = parentArray[i].Length;
        }

        return counts;
    }
}

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