Move isPostsAscending logic to Posts utility class

1 files changed, 16 insertions, 0 deletions

diff --git a/src/main/java/com/mavlushechka/a1qa/utils/Posts.java b/src/main/java/com/mavlushechka/a1qa/utils/Posts.java
new file mode 100644
index 0000000..d0bdfaa
--- /dev/null
+++ b/src/main/java/com/mavlushechka/a1qa/utils/Posts.java
@@ -0,0 +1,16 @@
+package com.mavlushechka.a1qa.utils;
+
+import com.mavlushechka.a1qa.models.Post;
+
+import java.util.List;
+import java.util.stream.IntStream;
+
+public class Posts {
+
+    public static boolean isPostsAscending(List<Post> posts) {
+        return IntStream.range(1, posts.size())
+                .map(index -> posts.get(index - 1).compareTo(posts.get(index)))
+                .allMatch(order -> order <= 0);
+    }
+
+}