@@ -0,0 +1,605 @@
+package com.mergesort;%0A%0A/**%0A * Please choose input data: 1 - from txt files, 2 - from keyboard.%0A * If you choose: '1', but the file does not exist, automatically input by keyboard%0A */%0A%0Apublic class InputData %7B%0A%0A    public static void main(String%5B%5D args) %7B%0A        chooseData();%0A    %7D%0A%0A    public static void chooseData() %7B%0A        System.out.println(%22Please choose input data: 1 - from txt files, 2 - from keyboard. %5CnIf you choose: '1', but the file does not exist, automatically input by keyboard%22);%0A    %7D%0A%0A//    public int%5B%5D keyboardData() %7B%0A//%0A//    %7D%0A//%0A//    public int%5B%5D filesData() %7B%0A//%0A//    %7D%0A%0A%7D

add input data class with methods