Question: write the method called replaceString which takes a String argument. The method will pick a random integer representing one of the characters in the String

write the method called replaceString which takes a String argument. The method will pick a random integer representing one of the characters in the String and returns a String that has that position in the String replaced with a "9".

replaceString("Dude") returns "9ude" or "D9de" or "Du9e" or "Dud9"

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