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// 这是C#代码
// Dictionary 与 List 位于 System.Collections.Generic 命名空间下
string[] StringSort(string[] source)
        {
            int[] sortKeys(int[] src)    // 这里是用于排序字典的键的
            {
                int most;
                int mostIndex = 0;
                int temp;
                if (src.Length > 1)
                {
                    for (int i = 1; i < src.Length; i++)
                    {
                        most = src[i];
                        for (int j = i; j < src.Length; j++)
                        {
                            if (src[j] < most)
                            {
                                most = src[j];
                                mostIndex = j;
                            }
                        }
                        if (most < src[i - 1])
                        {
                            src[mostIndex] = src[i - 1];
                            src[i - 1] = most;
                        }
                    }
                }
                return src;
            }

            Dictionary<int, List<string>> firstSortedString = new Dictionary<int, List<string>>();
            List<string> result = new List<string>();

            foreach (string i in source)
            {
                if (!firstSortedString.ContainsKey(i.Length))
                {
                    firstSortedString.Add(i.Length, new List<string>());
                }
            }
            foreach (string i in source)
            {
                firstSortedString[i.Length].Add(i);
            }
            foreach (int i in sortKeys(firstSortedString.Keys.ToArray()))
            {
                foreach (string j in firstSortedString[i])
                {
                    result.Add(j);
                }
            }

            return result.ToArray();
        }
    }