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ive tried that, hence why im stuck

rev: I know i have to take a string and loop through each character starting from the end and remembering each character so i can place it in another string which is the reverse, but i am unsure how...

Okay i've done some of them. Im not sure how to do the methods:

rev
store
recall
iota
sum
mean

This is what I have so far:

I have to write a program that will define a number of public static methods:



add
takes two doubles, returns their sum
max
takes two doubles, returns the larger value (3.0 is...