Lecture11Recursion

Lecture11Recursion - Recursion A method of problem solving...

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Unformatted text preview: Recursion A method of problem solving Recursion The term refers to the fact that the same computation recurs or occurs repeatedly, as the problem is solved. A recursive computation solves a problem by using the solution of the same problem with simpler inputs Palindrome Example A man, a plan, a canal Panama! Go hang a salami, Im a lasagna hog Madam, Im Adam Palindrome Example: madam Are first and last letters the same? If not, it is not a palindrome If yes, remove first and last and examine the shorter word: ada Palindrome Example: ada Are first and last letters the same? If not, it is not a palindrome If yes, remove first and last and examine the shorter word: d Palindrome Example: d This is a simple case and it is answered yes. So, ada is also answered yes And madam is also answered yes Find solutions to simplest case(s) Strings with a single character The empty string isPalindrome() in java public class Sentence {...
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Lecture11Recursion - Recursion A method of problem solving...

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