add 2047

fishercoder1534 · fishercoder1534 · commit 34bd5b52cfe1 · 2021-10-24T08:58:33.000-07:00
diff --git a/README.md b/README.md
@@ -8,6 +8,7 @@ _If you like this project, please leave me a star._ &#9733;
 
 |  #  |      Title     |   Solutions   | Video  | Difficulty  | Tag                  
 |-----|----------------|---------------|--------|-------------|-------------
+|2047|[Number of Valid Words in a Sentence](https://leetcode.com/problems/number-of-valid-words-in-a-sentence/)|[Java](../master/src/main/java/com/fishercoder/solutions/_2047.java) ||Easy||
 |2044|[Count Number of Maximum Bitwise-OR Subsets](https://leetcode.com/problems/count-number-of-maximum-bitwise-or-subsets/)|[Java](../master/src/main/java/com/fishercoder/solutions/_2044.java) ||Medium||
 |2043|[Simple Bank System](https://leetcode.com/problems/simple-bank-system/)|[Java](../master/src/main/java/com/fishercoder/solutions/_2043.java) ||Medium||
 |2042|[Check if Numbers Are Ascending in a Sentence](https://leetcode.com/problems/check-if-numbers-are-ascending-in-a-sentence/)|[Java](../master/src/main/java/com/fishercoder/solutions/_2042.java) ||Easy||
diff --git a/src/main/java/com/fishercoder/solutions/_2047.java b/src/main/java/com/fishercoder/solutions/_2047.java
@@ -0,0 +1,43 @@
+package com.fishercoder.solutions;
+
+public class _2047 {
+    public static class Solution1 {
+        public int countValidWords(String sentence) {
+            String[] tokens = sentence.split("\\s+");
+            int count = 0;
+            for (String token : tokens) {
+                int hyphenCount = 0;
+                int punctuationMarkCount = 0;
+                boolean valid = true;
+                if (token.isEmpty() || token.equals("") || token.length() == 0) {
+                    continue;
+                }
+                for (int i = 0; i < token.length(); i++) {
+                    if (token.charAt(i) == '-') {
+                        hyphenCount++;
+                        if (hyphenCount > 1 || i == 0 || i == token.length() - 1 || !Character.isAlphabetic(token.charAt(i - 1)) || !Character.isAlphabetic(token.charAt(i + 1))) {
+                            valid = false;
+                            break;
+                        }
+                    } else if (token.charAt(i) == '!' || token.charAt(i) == '.' || token.charAt(i) == ',') {
+                        punctuationMarkCount++;
+                        if (punctuationMarkCount > 1 || i != token.length() - 1) {
+                            valid = false;
+                            break;
+                        }
+                    } else if (Character.isDigit(token.charAt(i))) {
+                        valid = false;
+                        break;
+                    } else if (Character.isDigit(token.charAt(i))) {
+                        valid = false;
+                        break;
+                    }
+                }
+                if (valid) {
+                    count++;
+                }
+            }
+            return count;
+        }
+    }
+}
