很菜,求一个题:编写一个函数使形如“Good afteroon sir”变成“sir afternoon Good”
编写一个函数使形如“Good   afteroon   sir”变成“sir   afternoon   Good” 
 谢谢!~~
------解决方案--------------------string str =  "Good afteroon sir "; 
 string[] astr = str.Split( '  '); 
 Array.Reverse(astr); 
 str = string.Join( "  ", astr);