2.1.21 #
解答 #
事实上官方给出来的 Date 类以及 Transaction 类都已经实现了这些接口。
Date 类：Date.java
Transaction 类：Transaction.java
代码 #
var a = new Transaction[4];
a[0] = new Transaction("Turing 6/17/1990 644.08");
a[1] = new Transaction("Tarjan 3/26/2002 4121.85");
a[2] = new Transaction("Knuth 6/14/1999 288.34");
a[3] = new Transaction("Dijkstra 8/22/2007 2678.40");
Console.WriteLine("Unsorted");
for (var i = 0; i < a.Length; i++)
{
Console.WriteLine(a[i]);
}
Console.WriteLine();
Console.WriteLine("Sort by amount");
var insertionSort = new InsertionSort();
insertionSort.Sort(a, new Transaction.HowMuchOrder());
for (var i = 0; i < a.Length; i++)
Console.WriteLine(a[i]);
Console.WriteLine();