Java 2D array programming

* Given a 20 array of characters, you are to convert every character that appears * between the two exclamation points to upper case characters. You can assume that * if there are any exclamation points in the array, then there are exactly two. There * may be no exclamation points in the array. * Hint \#1: To determine character equality, you can do something like the following: charc=!;if(c=1!1) * Hint \#2: To convert a character to upper case, you can do the following: * Hint \#3: Be careful that you alter the characters directly in the input array, you * should not be creating a new array. * Example 1: * When finished, the array should be: * When finished, the array should be: * input =[