Fibonacci Tuples+

Author: sanketgupta07

src/com/java8in/action/ch5/BuildingStream.java

@@ -8,6 +8,7 @@
 import java.nio.file.Files;
 import java.nio.file.Paths;
 import java.util.Arrays;
+import java.util.Date;
 import java.util.stream.Stream;
 
 /**
@@ -41,6 +42,12 @@ public static void main(String[] args) {
 } catch (IOException e) {
 System.out.println("IO exception");
 }
+
+//Stream iterate and generate
+
+Stream.iterate(2, n-> n+2).limit(10).forEach(System.out::println);
+Stream.generate(Math::random).limit(10).forEach(System.out::println);
+
 
 }
 

src/com/java8in/action/ch5/FibonacciTuple.java

@@ -0,0 +1,32 @@
+/**
+ * 
+ */
+package com.java8in.action.ch5;
+
+import java.util.stream.Stream;
+
+/**
+ * eg. (0,1)(1,1)(1,2)(2,3)(3,5)(5,8)....
+ * @author Sanket Gupta
+ *
+ */
+public class FibonacciTuple {
+
+/**
+ * @param args
+ */
+public static void main(String[] args) {
+System.out.println("Printing tuples");
+Stream.iterate(new int []{0,1}, t -> new int[]{t[1],t[0]+t[1]})
+.limit(10)
+.forEach(t->System.out.print("("+t[0]+","+t[1]+")"));
+
+System.out.println("Printing series");
+Stream.iterate(new int []{0,1}, t -> new int[]{t[1],t[0]+t[1]})
+.map(t->t[0])
+.limit(10)
+.forEach(System.out::println);
+
+}
+
+}