Given two arrays of strings a1 and a2 return a sorted array r in lexicographical order of the strings of a1 which are substrings of strings of a2. Example 1: a1 = ["arp", "live", "strong"] a2 = ["lively", "alive", "harp", "sharp", "armstrong"] returns ["arp", "live", "strong"] Example 2: a1 = ["tarp", "mice", "bull"] a2 = ["lively", "alive", "harp", "sharp", "armstrong"] returns [] Notes: Arrays..
