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 package com.softeem.jbs.lesson4;

import java.util.Random;

/**

* ÅÅÐò²âÊÔÀà

* ÅÅÐòËã·¨µÄ·ÖÀàÈçÏ£º

* 1.²åÈëÅÅÐò£¨Ö±½Ó²åÈëÅÅÐò¡¢ÕÛ°ë²åÈëÅÅÐò¡¢Ï£¶ûÅÅÐò£©£»

* 2.½»»»ÅÅÐò£¨Ã°ÅÝÅÝÅÅÐò¡¢¿ìËÙÅÅÐò£©£»

* 3.Ñ¡ÔñÅÅÐò£¨Ö±½ÓÑ¡ÔñÅÅÐò¡¢¶ÑÅÅÐò£©£»

* 4.¹é²¢ÅÅÐò£»

* 5.»ùÊýÅÅÐò¡£

*

* ¹ØÓÚÅÅÐò·½·¨µÄÑ¡Ôñ£º

* (1)Èôn½ÏС(Èçn≤50)£¬¿É²ÉÓÃÖ±½Ó²åÈë»òÖ±½ÓÑ¡ÔñÅÅÐò¡£

* ¡¡µ±¼Ç¼¹æÄ£½ÏСʱ£¬Ö±½Ó²åÈëÅÅÐò½ÏºÃ£»·ñÔòÒòΪֱ½ÓÑ¡ÔñÒÆ¶¯µÄ¼Ç¼ÊýÉÙÓÚÖ±½Ó²åÈË£¬Ó¦Ñ¡Ö±½ÓÑ¡ÔñÅÅÐòΪÒË¡£

* (2)ÈôÎļþ³õʼ״̬»ù±¾ÓÐÐò(Ö¸ÕýÐò)£¬ÔòӦѡÓÃÖ±½Ó²åÈË¡¢Ã°ÅÝ»òËæ»úµÄ¿ìËÙÅÅÐòΪÒË£»

* (3)Èôn½Ï´ó£¬ÔòÓ¦²ÉÓÃʱ¼ä¸´ÔÓ¶ÈΪO(nlgn)µÄÅÅÐò·½·¨£º¿ìËÙÅÅÐò¡¢¶ÑÅÅÐò»ò¹é²¢ÅÅÐò¡£

*

*/

public class SortTest {

/**

* ³õʼ»¯²âÊÔÊý×éµÄ·½·¨

* @return Ò»¸ö³õʼ»¯ºÃµÄÊý×é

*/

public int[] createArray() {

Random random = new Random();

int[] array = new int[10];

for (int i = 0; i < 10; i++) {

array[i] = random.nextInt(100) - random.nextInt(100);//Éú³ÉÁ½¸öËæ»úÊýÏà¼õ£¬±£Ö¤Éú³ÉµÄÊýÖÐÓиºÊý

}

System.out.println("==========ԭʼÐòÁÐ==========");

printArray(array);

return array;

}

/**

* ´òÓ¡Êý×éÖеÄÔªËØµ½¿ØÖÆÌ¨

* @param source

*/

public void printArray(int[] data) {

for (int i : data) {

System.out.print(i + " ");

}

System.out.println();

}



/**

* ½»»»Êý×éÖÐÖ¸¶¨µÄÁ½ÔªËصÄλÖÃ

* @param data

* @param x

* @param y

*/

private void swap(int[] data, int x, int y) {



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How to Write an Equality Method in Java
by Martin Odersky, Lex Spoon, and Bill Venners
June 1, 2009
Summary
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