implemented method getSalaryInfo(...) according to requirements

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

@@ -1,7 +1,58 @@
 package core.basesyntax;
 
+import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
+
 public class SalaryInfo {
+    private static final DateTimeFormatter FORMATTER = DateTimeFormatter.ofPattern("dd.MM.yyyy");
+    private static final int DATE_INDEX = 0;
+    private static final int HOURS_INDEX = 2;
+    private static final int INCOME_INDEX = 3;
+    private static final int NAME_INDEX = 1;
+    private static final String DATA_DELIMITER = " ";
+    private static final String REPORT_DELIMITER = " - ";
+    private static final String REPORT_HEADER = "Report for period ";
+
     public String getSalaryInfo(String[] names, String[] data, String dateFrom, String dateTo) {
-        return null;
+        final LocalDate fromDate = LocalDate.parse(dateFrom, FORMATTER);
+        final LocalDate toDate = LocalDate.parse(dateTo, FORMATTER);
+        int[] salaries = new int[names.length];
+        for (String info : data) {
+            String[] parts = info.split(DATA_DELIMITER);
+            LocalDate recordDay = LocalDate.parse(parts[DATE_INDEX], FORMATTER);
+            if (isWithinDateRange(recordDay, fromDate, toDate)) {
+                calculateSalaries(names, parts, salaries);
+            }
+        }
+        return composeReport(names, dateFrom, dateTo, salaries);
+    }
+
+    private static boolean isWithinDateRange(LocalDate currentDate, LocalDate fromDate,
+                                             LocalDate toDate) {
+        return (currentDate.isAfter(fromDate) || currentDate.isEqual(fromDate)) && (
+                currentDate.isBefore(toDate) || currentDate.isEqual(toDate));
+    }
+
+    private static void calculateSalaries(String[] names, String[] parts, int[] salaries) {
+        for (int i = 0; i < names.length; i++) {
+            if (names[i].equals(parts[NAME_INDEX])) {
+                salaries[i] += Integer.parseInt(parts[HOURS_INDEX]) * Integer.parseInt(
+                        parts[INCOME_INDEX]);
+            }
+        }
+    }
+
+    private static String composeReport(String[] names, String dateFrom, String dateTo,
+                                        int[] salaries) {
+        StringBuilder report = new StringBuilder(REPORT_HEADER).append(dateFrom)
+                .append(REPORT_DELIMITER)
+                .append(dateTo);
+        for (int i = 0; i < names.length; i++) {
+            report.append(System.lineSeparator())
+                    .append((names[i]))
+                    .append(REPORT_DELIMITER)
+                    .append(salaries[i]);
+        }
+        return report.toString();
     }
 }