finished Exercise27

Author: Jonathan-Birkey

src/com/github/jonathanbirkey/chapter05/Exercise27.java

@@ -0,0 +1,33 @@
+/**
+ * @author : Jonathan Birkey
+ * @mailto : [email protected]
+ * @created : 27Dec2021
+ *     <p>(Display leap years) Write a program that displays all the leap years, 10 per line, from
+ *     101 to 2100, separated by exactly one space. Also display the number of leap years in this
+ *     period.
+ */
+package com.github.jonathanbirkey.chapter05;
+
+public class Exercise27 {
+  public static void main(String[] args) {
+    int yearsPerLine = 10;
+    int printedYears = 0;
+    int startYear = 101;
+    int endYear = 2100;
+    int totalLeapYears = 0;
+
+    for (int i = startYear; i <= endYear; i++) {
+      if ((i % 4 == 0 && i % 100 != 0) || (i % 400 == 0)) {
+        printedYears++;
+        if (printedYears == yearsPerLine) {
+          System.out.printf("%d\n", i);
+          printedYears = 0;
+        } else {
+          System.out.printf("%d ", i);
+        }
+        totalLeapYears++;
+      }
+    }
+    System.out.printf("\nNumber of leap years in this period: %d", totalLeapYears);
+  }
+}