C#学习笔记之——一些应用

//写一系列的重载函数，使其对任意数组（int、char、string）均可排序。同时，在数组之后可增加int参数，使数组可指定排序范围。例如：{1，3，5，2，4}，可对3、5、2排序，1和4不变。
	public class MathTool
	{
		public MathTool ()
		{
		}
		public void Sort (int start, int end, params int[] a) {
			int temp = a[start];
			for (int i = start; i < end; i++) {
				for (int j = start; j < end; j++) {
					if (temp > a [i + 1]) {
						temp = a [i + 1];
						a [i] = a [i + 1];
						a [i + 1] = a [i];
					}
				}	
			}
		}

		public void Sort(int start, int end, params char[] a) {
			char temp = a [start];
			for (int i = start; i < end; i++) {
				for (int j = start; j < end; j++) {
					if (temp > a [i + 1]) {
						temp = a [i + 1];
						a [i] = a [i + 1];
						a [i + 1] = a [i];
					}
				}	
			}
		}

		public void Sort(int start, int end, params string[] a) {
			for (int i = start; i < end - 1; i++) {
				for (int j = start; j < end - 1 - start; j++) {
					if (a[j].CompareTo (a[j + 1]) == 1) {
						string temp = a [i + 1];
						a [i] = a [i + 1];
						a [i + 1] = temp;
					}
				}	
			}
		}
	}