diff --git a/Article_View1.txt b/Article_View1.txt
new file mode 100644
index 0000000..9d2d7b3
--- /dev/null
+++ b/Article_View1.txt
@@ -0,0 +1,7 @@
+import pandas as pd
+
+def article_views(views: pd.DataFrame) -> pd.DataFrame:
+    df = views[views["author_id"] == views["viewer_id"]]
+    df = df.drop_duplicates(subset=["author_id"],inplace = False)
+    df = df.sort_values(by='author_id')
+    return df[["author_id"]].rename(columns = {'author_id':'id'})
\ No newline at end of file
diff --git a/Invalid_Tweet.txt b/Invalid_Tweet.txt
new file mode 100644
index 0000000..46d56f5
--- /dev/null
+++ b/Invalid_Tweet.txt
@@ -0,0 +1,6 @@
+import pandas as pd
+
+def invalid_tweets(tweets: pd.DataFrame) -> pd.DataFrame:
+    isValid = tweets['content'].str.len() > 15
+    df = tweets[isValid]
+    return df[['tweet_id']]
\ No newline at end of file