added solution of task

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

@@ -1,7 +1,44 @@
 package core.basesyntax;
 
+import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
+
 public class SalaryInfo {
+    private static final int DATE_POSITION_IN_DATA_STRING = 0;
+    private static final int NAME_POSITION_IN_DATA_STRING = 1;
+    private static final int HOURS_POSITION_IN_DATA_STRING = 2;
+    private static final int INCOME_PER_HOUR_POSITION_IN_DATA_STRING = 3;
+    private final DateTimeFormatter dateFormatter = DateTimeFormatter.ofPattern("dd.MM.yyyy");
+
     public String getSalaryInfo(String[] names, String[] data, String dateFrom, String dateTo) {
-        return null;
+        StringBuilder sb = new StringBuilder();
+        sb.append("Report for period ").append(dateFrom).append(" - ").append(dateTo);
+
+        for (int j = 0; j < names.length; j++) {
+            int salaryAmount = 0;
+
+            for (int i = 0; i < data.length; i++) {
+                String[] dataString = data[i].split(" ");
+                LocalDate date = LocalDate.parse(dataString[DATE_POSITION_IN_DATA_STRING],
+                        dateFormatter);
+
+                if (isDateBetweenDates(date, dateFrom, dateTo)
+                        && names[j].equals(dataString[NAME_POSITION_IN_DATA_STRING])) {
+
+                    salaryAmount += Integer.parseInt(dataString[HOURS_POSITION_IN_DATA_STRING])
+                            * Integer.parseInt(dataString[INCOME_PER_HOUR_POSITION_IN_DATA_STRING]);
+                }
+            }
+            sb.append(System.lineSeparator())
+                    .append(names[j])
+                    .append(" - ")
+                    .append(salaryAmount);
+        }
+        return sb.toString();
+    }
+
+    private boolean isDateBetweenDates(LocalDate date, String dateFrom, String dateTo) {
+        return date.isAfter(LocalDate.parse(dateFrom, dateFormatter).minusDays(1))
+                && date.isBefore(LocalDate.parse(dateTo, dateFormatter).plusDays(1));
     }
 }