Is the recursive solution to the triangle number the best way to obtain the triangle number?   A. Yes, because recursive solutions are always efficient.   B. Yes, because the shape of the triangle number diagram lends itself to a recursive solution.   C. No, the triangle number can be found in a more efficient manner.   D. None of the above are true.

Describe a recursive approach for computing the prime factors of a number.

Answer the given question with a proper explanation and step-by-step solution.

in kotlin Write two versions of a recursive palindrome check function.  One version should have a block body, and the other should have an expression body.  Review the lecture slide about the substring function first.  Use this algorithm: if the length of the string is less than 2, return true else if the first and last characters are not equal (!=) return false else return the result of a recursive call with the substring from the second character (the one at index 1) to the second to last character. Use a main that uses a loop to test the palindrome function using this list of strings:     val ss = listOf("", "A", "AA", "AB", "AAA", "ABA", "ABB", "AAAA", "AABA", "ABBA", "ABCBA", "ABCAB")