@@ -0,0 +1,388 @@
+package ru.job4j;%0A%0A/**.%0A*%0A* @author Anton Vasilyuk%0A* @version 1.0%0A* @since 0.1%0A*/%0Apublic class Factorial %7B%0A%0A%09/**.%0A%09* Method for calculation factorial%0A%09* @param x number factorial%0A%09* @return result%0A%09*/%0A%09public int multiplFactor(int x) %7B%0A%0A%09%09/**.%0A%09%09* @i value%0A%09%09*/%0A%09%09int i = 1;%0A%09%09int result = 1;%0A%09%09int z = x + 1;%0A%09%09for (i = 1; i %3C z; i++) %7B%0A%09%09%09result = result * i;%0A%09%09%7D%0A%09%09return result;%0A%09%7D%0A%0A%7D

add file for chapter_001_4.2