Java solution for Workdays

2 files changed, 34 insertions, 20 deletions

diff --git a/challenge-138/ziameraj16/README.md b/challenge-138/ziameraj16/README.md
index b23c6db907..f6c41db25d 100644
--- a/challenge-138/ziameraj16/README.md
+++ b/challenge-138/ziameraj16/README.md
@@ -1,31 +1,23 @@
-# Middle 3 digits
+# Workdays
 ## Java Solution
 
 To compile the code run
 ```java
-javac MiddleThreeDigits.java
+javac Workdays.java
 ```
 To run
 ```java
-java MiddleThreeDigits
+java Workdays
 ```
 ### Example
 ```bash
-~/study/github/perlweeklychallenge-club/challenge-135/ziameraj16/java$ javac MiddleThreeDigits.java
-~/study/github/perlweeklychallenge-club/challenge-135/ziameraj16/java$ java MiddleThreeDigits
-Enter the Number
-1234567
-345
-~/study/github/perlweeklychallenge-club/challenge-135/ziameraj16/java$ java MiddleThreeDigits
-Enter the Number
--123
-123
-~/study/github/perlweeklychallenge-club/challenge-135/ziameraj16/java$ java MiddleThreeDigits
-Enter the Number
-1
-too short
-~/study/github/perlweeklychallenge-club/challenge-135/ziameraj16/java$ java MiddleThreeDigits
-Enter the Number
-1234
-even number of digits
+~/study/github/perlweeklychallenge-club/challenge-138/ziameraj16/java$ javac Workdays.java
+~/study/github/perlweeklychallenge-club/challenge-138/ziameraj16/java$ java Workdays
+Enter the year
+2021
+Number of workdays: 261
+~/study/github/perlweeklychallenge-club/challenge-138/ziameraj16/java$ java Workdays
+Enter the year
+2020
+Number of workdays: 262
 ```
diff --git a/challenge-138/ziameraj16/java/Workdays.java b/challenge-138/ziameraj16/java/Workdays.java
new file mode 100644
index 0000000000..0659d1a8eb
--- /dev/null
+++ b/challenge-138/ziameraj16/java/Workdays.java
@@ -0,0 +1,22 @@
+import java.time.DayOfWeek;
+import java.time.LocalDate;
+import java.util.EnumSet;
+import java.util.Scanner;
+import java.util.Set;
+
+public class Workdays {
+
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        System.out.println("Enter the year");
+        final int year = scanner.nextInt();
+        System.out.println("Number of workdays: " + findNumberOfWorkdays(year));
+    }
+
+    private static long findNumberOfWorkdays(int year) {
+        final LocalDate start = LocalDate.of(year, 1, 1);
+        final LocalDate end = LocalDate.of(year, 12, 31);
+        Set<DayOfWeek> weekend = EnumSet.of(DayOfWeek.SATURDAY, DayOfWeek.SUNDAY) ;
+        return start.datesUntil(end).filter(date -> !weekend.contains(date.getDayOfWeek())).count() + 1;
+    }
+}