Merge pull request #10459 from deadmarshal/TWC278

TWC278

2 files changed, 56 insertions, 0 deletions

diff --git a/challenge-278/deadmarshal/java/Ch1.java b/challenge-278/deadmarshal/java/Ch1.java
new file mode 100644
index 0000000000..9715d94bc7
--- /dev/null
+++ b/challenge-278/deadmarshal/java/Ch1.java
@@ -0,0 +1,36 @@
+import java.util.HashMap;
+import java.util.Map;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+import java.util.stream.Collectors;
+
+public class Ch1 {
+  public static void main(String[] args) {
+    try {
+      System.out.println(sort_string("and2 Raku3 cousins5 Perl1 are4"));
+      System.out.println(sort_string("guest6 Python1 most4 the3 popular5 is2 " +
+				     "language7"));
+      System.out.println(sort_string("Challenge3 The1 Weekly2"));
+    } catch (Exception e) {
+      System.err.println(e.getMessage());
+    }
+  }
+
+  private static String sort_string(String str) throws Exception {
+    Pattern pattern = Pattern.compile("(\\w+)(\\d+)");
+    Map<String, Integer> m = new HashMap<>();
+    for (String s : str.split(" ")) {
+      Matcher matcher = pattern.matcher(s);
+      if (matcher.find())
+        m.put(matcher.group(1), Integer.parseInt(matcher.group(2)));
+      else
+        throw new Exception("Wrong format!");
+    }
+    return m.entrySet()
+      .stream()
+      .sorted(Map.Entry.comparingByValue())
+      .map(Map.Entry::getKey)
+      .collect(Collectors.joining(" "));
+  }
+}
+
diff --git a/challenge-278/deadmarshal/java/Ch2.java b/challenge-278/deadmarshal/java/Ch2.java
new file mode 100644
index 0000000000..c8dde6453c
--- /dev/null
+++ b/challenge-278/deadmarshal/java/Ch2.java
@@ -0,0 +1,20 @@
+import java.util.Arrays;
+
+public class Ch2 {
+  public static void main(String[] args) {
+    System.out.println(reverse_string("challenge", 'e'));
+    System.out.println(reverse_string("programming", 'a'));
+    System.out.println(reverse_string("champion", 'b'));
+  }
+
+  private static String reverse_string(String str, char c) {
+    int idx = str.indexOf(c);
+    if (idx != -1) {
+      char[] arr = str.substring(0, idx + 1).toCharArray();
+      Arrays.sort(arr);
+      return String.valueOf(arr) + str.substring(idx);
+    }
+    return str;
+  }
+}
+