Solution for the task:

- added implementation to the method getSalaryInfo(), class SalaryInfo
- added parseDate() method to the class SalaryInfo

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

@@ -1,7 +1,48 @@
 package core.basesyntax;
 
+import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
+
 public class SalaryInfo {
+    private static final int DATE_INDEX = 0;
+    private static final int NAME_INDEX = 1;
+    private static final int HOUR_INDEX = 2;
+    private static final int SALARY_PER_HOUR_INDEX = 3;
+
+    private static final DateTimeFormatter FORMATTER = DateTimeFormatter.ofPattern("dd.MM.yyyy");
+
     public String getSalaryInfo(String[] names, String[] data, String dateFrom, String dateTo) {
-        return null;
+        StringBuilder summaryReport = new StringBuilder("Report for period ");
+        summaryReport
+                .append(dateFrom)
+                .append(" - ")
+                .append(dateTo);
+        LocalDate startDate = parseDate(dateFrom);
+        LocalDate endDate = parseDate(dateTo);
+        for (int i = 0; i < names.length; i++) {
+            summaryReport.append("\n");
+            int salaryInfo = 0;
+            for (int j = 0; j < data.length; j++) {
+                String[] tempDataDetails = data[j].split(" ");
+                LocalDate employeeDate = parseDate(tempDataDetails[DATE_INDEX]);
+                if (names[i].equals(tempDataDetails[NAME_INDEX])) {
+                    if (employeeDate.isAfter(startDate)
+                            && (employeeDate.isBefore(endDate)
+                            || employeeDate.isEqual(endDate))) {
+                        salaryInfo += Integer.parseInt(tempDataDetails[HOUR_INDEX])
+                                * Integer.parseInt(tempDataDetails[SALARY_PER_HOUR_INDEX]);
+                    }
+                }
+            }
+            summaryReport
+                    .append(names[i])
+                    .append(" - ")
+                    .append(salaryInfo);
+        }
+        return summaryReport.toString();
+    }
+
+    private static LocalDate parseDate(String dateFrom) {
+        return LocalDate.parse(dateFrom, FORMATTER);
     }
 }