2301. Match Substring After Replacement

You are given two strings s and sub. You are also given a 2D character array mappings where mappings[i] = [oldi, newi] indicates that you may perform the following operation any number of times: - Replace a character oldi of sub with newi. Each character in sub cannot be replaced more than once. Return true if it is possible to make sub a substring of s by replacing zero or more characters acco