From 1aa3887cc085acbf5bf418d293d600da826d75e4 Mon Sep 17 00:00:00 2001
From: Maxim <maxplusim@mail.ru>
Date: Thu, 11 Jul 2024 19:37:58 +0300
Subject: [PATCH] Improve table border detection

---
 .../consumers/LinesPreprocessingConsumer.java        | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/main/java/org/verapdf/wcag/algorithms/semanticalgorithms/consumers/LinesPreprocessingConsumer.java b/src/main/java/org/verapdf/wcag/algorithms/semanticalgorithms/consumers/LinesPreprocessingConsumer.java
index 8d9a60ee..4a107dc1 100644
--- a/src/main/java/org/verapdf/wcag/algorithms/semanticalgorithms/consumers/LinesPreprocessingConsumer.java
+++ b/src/main/java/org/verapdf/wcag/algorithms/semanticalgorithms/consumers/LinesPreprocessingConsumer.java
@@ -101,15 +101,17 @@ private List<TableBorderBuilder> findTableBorders(Integer pageNumber) {
     private void mergeTableBorders(List<TableBorderBuilder> tableBorders) {
         for (int i = tableBorders.size() - 2; i >= 0; i--) {
             TableBorderBuilder border = tableBorders.get(i);
-            for (int j = i + 1; j < tableBorders.size();) {
+            List<Integer> indexes = new LinkedList<>();
+            for (int j = tableBorders.size() - 1; j > i; j--) {
                 TableBorderBuilder border2 = tableBorders.get(j);
                 if (border.isConnectedBorder(border2)) {
-                    border.mergeBorder(border2);
-                    tableBorders.remove(j);
-                } else {
-                    j++;
+                    indexes.add(j);
                 }
             }
+            for (Integer index : indexes) {
+                border.mergeBorder(tableBorders.get(index));
+                tableBorders.remove((int)index);
+            }
         }
     }