@@ -0,0 +1,343 @@
+public class Array220 %7B%0A  public static void main (String... args) %7B%0A    // Result: true.%0A    System.out.println(new Array220().array220(new int %5B%5D%7B1,2,20%7D,0));%0A  %7D%0A  %0A  public boolean array220(int%5B%5D nums, int index) %7B%0A%09  return (nums.length==0%7C%7Cindex==nums.length-1)?false:((nums%5Bindex%5D*10==nums%5Bindex+1%5D)?true:array220 (nums,++index));%0A%09%7D%0A%7D%0A

Create Array220.java