From 81ba9eb66f8284d8760012973f84cdbe617ceb94 Mon Sep 17 00:00:00 2001 From: pants Date: Mon, 21 Sep 2026 14:16:34 -0700 Subject: init --- in_class/cse123-inclass9/ReverseString.java | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 in_class/cse123-inclass9/ReverseString.java (limited to 'in_class/cse123-inclass9/ReverseString.java') diff --git a/in_class/cse123-inclass9/ReverseString.java b/in_class/cse123-inclass9/ReverseString.java new file mode 100644 index 0000000..f2a5858 --- /dev/null +++ b/in_class/cse123-inclass9/ReverseString.java @@ -0,0 +1,22 @@ +public class ReverseString { + public static void main(String[] args){ + System.out.println(reverse("Hello")); + System.out.println(reverse("nathan")); + System.out.println(reverse("racecar")); + System.out.println(reverse("taco")); + System.out.println(reverse("ABBA")); + System.out.println(reverse("")); + System.out.println(reverse("a")); + } + + public static String reverse(String str){ + if (str.isEmpty()) { + return ""; + } else if (str.length() == 1) { + return str; + } + + String backwards = reverse(str.substring(1)) + str.charAt(0); + return backwards; + } +} -- cgit v1.2.3