package ch09.api;

import java.util.Arrays;

// java.lang.Math 클래

public class Ex01 {
	public static void main(String[] args) {
		double pi=Math.PI;
		System.out.println(pi);

		int a=Math.abs(-30);
		System.out.println(a);
		
		float b=Math.max(55.5f, 66.6f);
		System.out.println(b);
		
		int c=Math.min(10, -5);
		System.out.println(c);
		
		//소수첫째자리 반올림
		float su=123.567f;
		int d=Math.round(su);
		System.out.println(d);
		
		//소수 랜덤 뽑기
		double e=Math.random();
		System.out.println(e);
		
		//1~10숫자 뽑기
		int x=(int)(Math.random() *10) +1;
		System.out.println(x);
		
		//사람 뽑기
		String[] array=new String[] {"aa", "bb", "cc", "dd", "gg"};
		int index=(int)(Math.random() * array.length);
		System.out.println(array[index]);
		
		//주사위
		int num=(int)(Math.random()*6)+1;
		System.out.println(num);
		
		
		//로또번호 뽑
		int[] number=new int[6];
		
		for(int i=0; i<number.length; i++) {
			number[i]=(int)(Math.random()*45)+1;
			//System.out.print(number[i] + "\\t");
		}
		
		Arrays.sort(number);
		System.out.println(Arrays.toString(number));
	}

}

3.141592653589793
30
66.6
-5
124
0.6604892463963461
1
cc
6
[5, 8, 27, 29, 37, 43]