摘要：
//fffff char [] a = {"1","2","3"}string b = new string(a)string[] a = {"1","2","3"}string b = String.Join("",a)String类的属性与方法属性：字符数量, Length a:"1111222 阅读全文
摘要：
//fff int [] a;int [] a = new int[5]//默认0int [] a = new int [5] {1,1,1,1,1}int [] a = {1,1,1,1}int [] a = new int[] {1,1,1}int [] b = a//两个指向同一个内存地址 阅读全文