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Author: M-F-Tushar

OOP in Java/Chapter 10 - Object-Oriented Thinking/Code_Example/Exercise10_21.java

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+package ch_10;
+
+import java.math.BigDecimal;
+import java.math.BigInteger;
+
+/**
+ * 10.21 (Divisible by 5 or 6) Find the first ten numbers greater than Long.MAX_VALUE
+ * that are divisible by 5 or 6.
+ */
+public class Exercise10_21 {
+    public static void main(String[] args) {
+        BigInteger testNumber = BigInteger.valueOf(Long.MAX_VALUE);
+        BigInteger FIVE = BigInteger.valueOf(5L);
+        BigInteger SIX = BigInteger.valueOf(6L);
+
+        int count = 0;
+        while (count < 10) {
+            testNumber = testNumber.add(BigInteger.ONE);
+
+            BigInteger remainder = testNumber.remainder(FIVE);
+            if (remainder.intValue() == 0) {
+                System.out.print("\n" + testNumber.toString());
+                System.out.print(" divided by 5 = ");
+                BigInteger res = testNumber.divide(FIVE);
+                System.out.print(res.toString());
+                count++;
+            }
+
+            BigInteger remainder6 = testNumber.remainder(SIX);
+            if (remainder6.intValue() == 0) {
+                System.out.print("\n" + testNumber.toString());
+                System.out.print(" divided by 6 = ");
+                BigInteger res = testNumber.divide(SIX);
+                System.out.print(res.toString());
+                count++;
+            }
+
+        }
+    }
+}