方法一：使用for循环int []pins = {9,3,7,2}int []copy = new int[pins.length];for(int i =0;i!=copy.length;i++){copy[i] = pins[i];}

方法二：使用数组对象中的CopyTo（）方法int []pins = {9,3,7,2}int []copy2 = new int[pins.length];pins.CopyTo(copy2,0);

方法三：使用Array类的一个静态方法Copy()int []pins = {9,3,7,2}int []copy3 = new int[pins.length];Array.Copy(pins,copy3,copy.Length);

方法四：使用Array类中的一个实例方法Clone（），可以一次调用，最方便，但是Clone（）方法返回的是一个对象，所以要强制转换成恰当的类类型。int []pins = {9,3,7,2}int []copy4 = (int [])pins.Clone();

方法五：string[] student1 = { "$", "$", "c", "m", "d", "1", "2", "3", "1", "2", "3" };string[] student2 = { "0", "1", "2", "3", "4", "5", "6", "6", "1", "8", "16","10","45", "37", "82" };ArrayList student = new ArrayList();    foreach (string s1 in student1){      student.Add(s1);                 }foreach (string s2 in student2){      student.Add(s2);}string[] copyAfter = (string[])student.ToArray(typeof(string));