Write a write a function to replace every lowercase character to its uppercase equivalent. You may not use upperO, and your solution must use the ord0 and/or chrO functions. You may not use functions like encode or replace either - you are expected to use loops to accomplish this replacement. This function must take only the string to be modified as an argument and must return the new string. Write a function to replace at least four different phrases (of two or three words) with established acronyms (e.g., replace "BY THE WAY" with "BTW") of your choosing This function must take only the string to be modified as an argument and must return the string with the replacements. You may not use any built-in find, replace, encode, or translate functions, but you may write your own version of these functions if you wish, and you may use the indexing operator (i.e., the square brackets), the slicing operator (i.e, the colon), the "in" operator, and the lenO function