ql: Write a public static method named ql that takes a HashMap of type String to Character and returns a String. This method returns the key mapping to the char that comes last * alphabetically, ignoring case, from the values of the input (hint: The Character class has * st?tic methods that convert chars to upper or lower case. In Java, chars are represented as ints so you can use to compare them) 14 16 q2: Write a public static method named q2 that takes a HashMap of type String to Integer and returns a double. This method returns the maximum result (do not return the original value) of taking the cosine of each value from the input while considering only negative numbers from the inputs 25 27 q3: Write a public static method named q3 that takes an ArrayList of type Character and * in the data where significant is defined as the char that comes first sand>) 32 returns an int. This method returns the number of times a most significant value appears alphabetically/lexicographically (case sensitive ordering) from the values of the input (hint: In java, chars are represented as ints that preserve this ordering. You can use