Arglongest (L) Write the function argLongest that, given a nonempty list of strings, finds the index of the longest even-length string that ends with ing. It takes a list of strings L as input and returns an integer, the index of the longest string in L with a suffix ing of even length. If there are many longest strings, return the index of the first one. If there are no such strings, return the index -1. Finding the index is more valuable than finding the element: you can quickly retrieve the element using the index, but you cannot quickly retrieve the index using the element. So we want to get in the habit of computing indices of elements, not elements.

7. the cullerton park district holds a mini-olympics each summer. create a class named participant with fields for a name, age, and street address. include a constructor that assigns parameter values to each field and a tostring() method that returns a string containing all the values. also include an equals() method that determines two participants are equal if they have the same values in all three fields. create an application with two arrays of at least eight participants each—one holds participants in the mini-marathon, and the other holds participants in the diving competition. prompt the user for participant values. after the data values are entered, display values for participants who are in both events. save the files as participant. java and twoeventparticipants. java.