import java.util.ArrayList;

import java.util.Arrays;

import java.util.List;

import java.util.stream.Collectors;

import java.util.stream.Stream;

/**

 * Created by root on 16-5-19.

 */

public class StreamTest {

    /**

     * 集合中不小于50的数输出出来[1, 20, 63, 58, 185, 60, 59, 20]

     */

    private static void fun1() {

        int[] a = {1, 20, 63, 58, 185, 60, 59, 20};

        Arrays.stream(a).filter(x -> (x >= 50)).forEach(System.out::println);

    }

    /**

     * 利用stream自身属性判断下列集合是否全部大于50，[1, 20, 63, 58, 185, 60, 59, 20]

     */

    private static boolean fun2() {

        int[] a = {1, 20, 63, 58, 185, 60, 59, 20};

        return Arrays.stream(a).allMatch(p -> p > 50);

    }

    /**

     * 输出下列两个集合中的存在的相同字符串，[“qwer”,”asdf”,”zxcv”,”fgh”,”jum”,”rfv”],[“edc”,”zse”,”asdf”,”zxcv”,”yhnj”]

     */

    private static void fun3() {

        String[] s1 = {"qwer", "asdf", "zxcv", "fgh", "jum", "rfv"};

        String[] s2 = {"edc", "zse", "asdf", "zxcv", "yhnj"};

        Arrays.stream(s1).forEach(x -> {

            Arrays.stream(s2).filter(y -> y.equals(x)).forEach(System.out::println);

        });

    }

    /**

     * 将下列集合中的所有数字乘以10,并得到新集合[1, 20, 63, 58, 185, 60, 59, 20]

     */

    private static void fun4() {

        Integer[] nums = {1, 20, 63, 58, 185, 60, 59, 20};

        Integer[] num = Arrays.stream(nums).map(n -> n * 10).toArray(Integer[]::new);

        Arrays.stream(num).forEach(System.out::println);

    }

    /**

     * 取出下列集合中的第3到7个值，加上5，得到新的集合[1, 20, 63, 58, 185, 60, 59, 20]

     */

    private static void fun5() {

        Integer[] nums = {1, 20, 63, 58, 185, 60, 59, 20};

        Integer[] num = Arrays.stream(nums).skip(2).limit(5).map(x -> x + 5).toArray(Integer[]::new);

        Arrays.stream(num).forEach(System.out::println);

    }

    /**

     * 输出下列集合的最小值[1, 20, 63, 58, 185, 60, 59, 20]

     */

    private static void fun6() {

        int[] nums = {1, 20, 63, 58, 185, 60, 59, 20};

        System.out.println(Arrays.stream(nums).min().getAsInt());

    }

    /**

     * 对下列集合进行从小到大排序[1, 20, 63, 58, 185, 60, 59, 20]

     */

    private static void fun7() {

        int[] nums = {1, 20, 63, 58, 185, 60, 59, 20};

        Arrays.stream(nums).sorted().forEach(System.out::println);

    }

    /**

     * 集合合并：["qwe","dfg","sss"],["qwe","dfg","sss"],["qwe","dfg","sss"]

     * 合并为["qwe","dfg","sss","qwe","dfg","sss","qwe","dfg","sss"]

     */

    private static void fun8() {

        String[] str1 = {"qwe", "dfg", "sss"};

        String[] str2 = {"rty", "ghkj", "fghh"};

        String[] str3 = {"gtb", "ssd", "dg"};

        ArrayList<String> results = new ArrayList<>();

        Stream.of(str1, str2, str3).forEach(p -> {

            Stream.of(p).forEach(x -> results.add(x));

        });

        results.stream().forEach(System.out::println);

    }

    /**

     * 取出下列集合中大于50的，并得到新的集合[1, 20, 63, 58, 185, 60, 59, 20]

     */

    private static void fun9() {

        Integer[] nums = {1, 20, 63, 58, 185, 60, 59, 20};

        Integer[] num = Arrays.stream(nums).filter(p -> p > 50).toArray(Integer[]::new);

        Arrays.stream(num).forEach(System.out::println);

    }

    /**

     * 将下列名字转换为大写，再排序输出（"Fred Edwards", "Anna Cox", "Deborah Patterson", "Ruth Torres", "Shawn Powell"）

     */

    private static void fun10() {

        String[] str = {"Fred Edwards", "Anna Cox", "Deborah Patterson", "Ruth Torres", "Shawn Powell"};

        Arrays.stream(str).map(p -> p.toUpperCase()).sorted().forEach(System.out::println);

    }

    public static void main(String[] args) {

        fun8();

    }

}