package lesson_3;

import java.util.Arrays;

public class Frame_16 {

	public static void main(String[] args) {
		// 
		int[] data= new int[] {0,1,2,3,4,5,6,7,8,9};
		int[] dataLong = new int[500000000]; // 9 millions items;
		Arrays.fill(dataLong, 1);
		
		long timeSpend,timeStart = System.currentTimeMillis();
		swap(dataLong);	//System.out.println(Arrays.toString(data));
		swap(dataLong);	//System.out.println(Arrays.toString(data));
		swap(dataLong);	//System.out.println(Arrays.toString(data));
		swap(dataLong);	//System.out.println(Arrays.toString(data));
		swap(dataLong);	//System.out.println(Arrays.toString(data));
		timeSpend = System.currentTimeMillis()-timeStart;
		System.out.println("Время затрачено : "+timeSpend);
		timeStart = System.currentTimeMillis();
		swapSnake(dataLong);//System.out.println(Arrays.toString(data));
		swapSnake(dataLong);//System.out.println(Arrays.toString(data));
		swapSnake(dataLong);//System.out.println(Arrays.toString(data));
		swapSnake(dataLong);//System.out.println(Arrays.toString(data));
		swapSnake(dataLong);//System.out.println(Arrays.toString(data));
		timeSpend = System.currentTimeMillis()-timeStart;
		System.out.println("Время затрачено : "+timeSpend);
		
	}
	static void swap(int[] data){
		if (data == null||data.length<2) {return;}
		int snakeValue = 0;
		
		for (int i = 0; i<data.length-1; i++){
			snakeValue = data[i];
			data[i] = data[i+1];
			data[i+1] = snakeValue;
			}
	}
	static void swapSnake(int[] data){
		if (data == null||data.length<2) {return;}
		int snakeValue = data[0];
		
		for (int i = 0; i<data.length-1; i++){
			data[i] = data[i+1];
			}
		data[data.length-1] = snakeValue;
	}

}