class Program { static void Main(string[] args) { int[] array = new[] { 234, 632, 23, 643, 2, 6, -2, 423, 2342,43 }; Console.WriteLine("排序前:"); Console.WriteLine(string.Join(",", array)); InsertSort(array); Console.WriteLine("排序后:"); Console.WriteLine(string.Join(",", array)); Console.ReadKey(); } /// <summary> /// 直接插入排序 /// </summary> /// <param name="sources">目标数组</param> private static void InsertSort(int[] sources) { // 从索引1开始,假设sources[0]已经有序 for (int i = 1, len = sources.Length - 1; i <= len; i++) { // 准备要插入的数据 int insertValue = sources[i], // 假设要插入的索引 insertIndex = i - 1; // 遍历查找插入的索引位置 while (insertIndex >= 0 && insertValue < sources[insertIndex]) { // 当前数据后移一位 sources[insertIndex + 1] = sources[insertIndex]; insertIndex--; } // 不满足以上条件,说明找到位置,插入数据 sources[insertIndex + 1] = insertValue; } } /// <summary> /// 直接插入排序 for实现 /// </summary> /// <param name="sources">目标数组</param> private static void InsertSort1(int[] sources) { for (int i = 1, len = sources.Length - 1; i <= len; i++) { for (int j = i; j > 0; j--) { if (sources[j] > sources[j - 1]) // > 降序, < 升序 { int temp = sources[j]; sources[j] = sources[j - 1]; sources[j - 1] = temp; } } } } }