issue #26 TwoCharacters-ing

sowon-dev · sowon-dev · commit 16ef9d1cdf0c · 2021-02-27T23:55:40.000+09:00
diff --git a/src/hackerrank/TwoCharacters.java b/src/hackerrank/TwoCharacters.java
@@ -0,0 +1,24 @@
+package hackerrank;
+/*
+The characters present in  are a, b, e, and f.
+This means that  must consist of two of those characters and we must delete two others.
+Our choices for characters to leave are [a,b], [a,e], [a, f], [b, e], [b, f] and [e, f].
+If we delete e and f, the resulting string is babab.
+This is a valid  as there are only two distinct characters (a and b),
+and they are alternating within the string.
+If we delete a and f, the resulting string is bebeeeb.
+This is not a valid string  because there are consecutive e's present.
+Removing them would leave consecutive b's, so this fails to produce a valid string .
+Other cases are solved similarly.
+babab is the longest string we can create.
+ */
+public class TwoCharacters {
+  static int alternate(String s) {
+
+
+  }
+
+  public static void main(String[] args) {
+    System.out.println(alternate("beabeefeab")+", ans: 5");
+  }
+}
