First, write a function called max_length that takes as argument three strings andreturns the length of the largest of the three strings. you may not use max() to implement this function; you must useconditional statements. next, write a function called interleave that takes as argument three strings andreturns a string that is the result of interleaving the given strings together, onecharacter at a time. for example, if the three arguments are "abc", "abc", and "xyz",then the return value should be "aaxbbyccz". if the three strings are of unequallengths, then the shorter strings should be treated as if they have enough trailingwhitespaces to make the strings be of equal length. for example, if the threearguments are "ab", "xyz", and "x", then the return value should be "axxby z ". in thisexample, "ab" is treated like "ab " (1 trailing space), and "x" is treated like "x " (2trailing spaces), in order to match the length of "xyz".hint: you may find max_length useful. hint (or challenge? ): if you set things up properly before your loop, you can do this problem without conditional statements.