How many times word appears in two arrays?

Hello all,

 

I have two string arrays as follows:

 

string array1[] = { "once", "in", "a", "lifetime", "chance", "success" };

string array2[] = { "success", "is", "the", "only", "option" };

 

I want to have a function that will take the two arrays and return the number of times a word appears in both arrays.   I also want to have a function that takes in both arrays and returns the max number of characters for any word in both arrays.

 

Thanks for any help