add file to read and update companies list

Author: ankitprahladsoni

Solution.java

@@ -0,0 +1,48 @@
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+
+public class Solution {
+    public static void main(String[] args) throws IOException {
+        writeFile();
+    }
+
+    public static void writeFile() throws IOException {
+
+        Path FILE_PATH = Path.of("D:\\projects\\Leetcode\\README.md");
+        List<String> fileContent = new ArrayList<>(Files.readAllLines(FILE_PATH, StandardCharsets.UTF_8));
+
+        Path COMPANY = Path.of("D:\\projects\\Leetcode\\companies.txt");
+        List<String> companyContent = new ArrayList<>(Files.readAllLines(COMPANY, StandardCharsets.UTF_8));
+
+        for (String queNo : new HashSet<>(companyContent)) {
+            queNo = "_" + queNo.trim() + ".java";
+
+            for (int i = 0; i < fileContent.size(); i++) {
+                if (fileContent.get(i).contains(queNo)) {
+                    String updatedLine = updateLine(fileContent.get(i));
+                    fileContent.set(i, updatedLine);
+                    break;
+                }
+            }
+        }
+
+        Files.write(FILE_PATH, fileContent, StandardCharsets.UTF_8);
+    }
+
+    private static String updateLine(String s) {
+        String companyName = "Snapchat,Square,Twitter,Uber,Yelp";
+
+        String[] splits = s.split("\\|");
+        if (splits[6].trim().isEmpty()) {
+            splits[6] = companyName;
+        } else {
+            splits[6] = splits[6] + "<br>" + companyName;
+        }
+        return String.join("|", splits);
+    }
+}