10-25 Class Notes CS 107

# 10-25 Class Notes CS 107 - 10-25 Class Notes CS 107 Monday...

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In-lab portion of midterm #2 will be this week during your normally scheduled lab time. The in-class portion has been delayed from Friday until Monday, a week from today. Announcements: Questions? To sort an integer array called values you can use: Arrays.sort( values); // thanks to Mike (very long last name) // you may need to import java.util.Arrays (or something like that) You can use this in your program! Last Time: We started discussion the intuition for recursion Today: More intuition on recursion; Samples of recursive code Intuition for Recursion See course web page at: http://logos.cs.uic.edu/Examples%20And%20Notes/notes/Java/Recursion/Recursion.htm // Find the factorial of a non-negative integer x private int factorial( int x) } return answer; { int answer = 1; for (int i=x; i>0; i--) { answer = answer * i; } Consider this simple method to define factorial: Pasted from < http://logos.cs.uic.edu/Examples%20And%20Notes/notes/Java/Recursion/Recursion.htm > And two approaches using recursion. The first makes multiple "copies" of the same method.

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