salary

src/main/java/core/basesyntax/SalaryInfo.java

@@ -1,7 +1,47 @@
 package core.basesyntax;
 
+import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
+
 public class SalaryInfo {
-    public String getSalaryInfo(String[] names, String[] data, String dateFrom, String dateTo) {
-        return null;
+    private static final DateTimeFormatter FORMATTER =
+            DateTimeFormatter.ofPattern("dd.MM.yyyy");
+    private static final int NAME_INDEX = 1;
+    private static final int HOURS_INDEX = 2;
+    private static final int RATE_INDEX = 3;
+
+    public String getSalaryInfo(String[] names,
+                                String[] data,
+                                String dateFrom,
+                                String dateTo) {
+        StringBuilder result = new StringBuilder();
+        result.append("Report for period ").append(dateFrom)
+                .append(" - ").append(dateTo)
+                .append(System.lineSeparator());
+
+        LocalDate fromDate = LocalDate.parse(dateFrom, FORMATTER);
+        LocalDate toDate = LocalDate.parse(dateTo, FORMATTER);
+
+        for (String name : names) {
+            int salary = 0;
+
+            for (String record : data) {
+                String[] fragments = record.split(" ");
+                if (name.equals(fragments[NAME_INDEX])) {
+                    LocalDate recordDate =
+                            LocalDate.parse(fragments[0], FORMATTER);
+
+                    if (!recordDate.isBefore(fromDate)
+                            && !recordDate.isAfter(toDate)) {
+                        int hours = Integer.parseInt(fragments[HOURS_INDEX]);
+                        int rate = Integer.parseInt(fragments[RATE_INDEX]);
+                        salary += hours * rate;
+                    }
+                }
+            }
+            result.append(name).append(" - ").append(salary)
+                    .append(System.lineSeparator());
+        }
+        return result.toString().trim();
     }
 }