MIPS Exercise- Conversion to Lower Case

Declare a string in the data section, for example: .data

string: .asciiz "ABCDEFG" Write an MIPS program that prints the string, converts the string to all lower case characters and then prints the string again. Do this conversion by adding 0x20 to each character in the string. (See Appendix B to figure out why this works.) Assume that the data comprises only uppercase alphabetical characters, with no spaces or punctuation.