Given a string t[1..n], a number k < n is called a period of the string if for every i < n−k, t[i] = t[i + k] and k is smallest such number. for example, abcabcabcabcab has period 3. give a linear time algorithm to find the period of a string.

Which email writing etiquette should ariel follow to let people know that she received their message? a. reply to their messages immediately b. use formal language c. specify the email's intent in the subject field d. be direct when writing the reply