编写程序，运行时的界面如下图所示。要求：无论是拖动滚动条上的滚动框，还是单击滚动箭头（数值递增或递减1）或滚动条（数值递增或递减10），均可以在相应的标签中反映当前数值，并动态计算出均值；单击“Reset”按钮，可将各滚动条上的滚动框复位。-Programming, run-time interface is shown below. Requirements: either drag the scroll box on the scroll bar, or click the scroll arrow (increment or decrement the value 1) or the scroll bar (value up or down 10), the label can be reflected in the corresponding current value, and dynamic calculation the mean　click "Reset" button, you can scroll the scroll bar on the box reset.