package Arrays;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.Collections;

import java.util.List;

/**

* Created by Minsuk_Heo on 12/31/2016.

*/

public class MyArrayTest {

public static void main(String[] args) {

int[] array = { 2, 5, -2, 6, -3, 8, 0, -7, -9, 4 };

//Sort

Arrays.sort(array);

printArray("Sorted array", array);

int index = Arrays.binarySearch(array, 2);

System.out.println("Found 2 @ " + index);

// reverse

ArrayList arrayList = new ArrayList();

arrayList.add("A");

arrayList.add("B");

arrayList.add("C");

arrayList.add("D");

arrayList.add("E");

System.out.println(arrayList);

Collections.reverse(arrayList);

System.out.println(arrayList);

// merge two array

String[] a = {"A", "B", "C"};

String[] b = {"O", "U"};

List list = new ArrayList(Arrays.asList(a));

list.addAll(Arrays.asList(b));

Object[] c = list.toArray();

System.out.println(Arrays.toString(c));

// fill array at once

int[] arr = new int[6];

Arrays.fill(arr, 100);

for(int i : arr){

System.out.println(i);

}

// remove array item

ArrayList<Integer> intArr = new ArrayList<Integer>();

intArr.add(0);

intArr.add(1);

intArr.add(300);

System.out.println(intArr);

intArr.remove(0);

System.out.println(intArr);

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

stArr.add("abc");

stArr.add("efg");

System.out.println(stArr);

stArr.remove("efg");

System.out.println(stArr);

// compare two array

int[] ary = {1,2,3,4,5,6};

int[] ary1 = {1,2,3,4,5,6};

int[] ary2 = {1,2,3,4};

System.out.println("Is array 1 equal to array 2?? " +Arrays.equals(ary, ary1));

System.out.println("Is array 1 equal to array 3?? " +Arrays.equals(ary, ary2));

}

private static void printArray(String message, int array[]) {

System.out.println(message + ": [length: " + array.length + "]");

for (int i = 0; i < array.length; i++) {

if(i != 0) {

System.out.print(", ");

}

System.out.print(array[i]);

}

System.out.println();

}

}