Write a method that "mashes up" two strings by using the first 'num1' characters out of 'str1' followed by the first 'num2' characters in 'str2'. However, if either of the numbers ('num1' or 'num2') is greater than the number of characters in their respective strings, just use that whole string. NOTE: You may assume that 'num1' and 'num2' Look at the test data for examples.