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import java.util.Random;
 
/**
 * ÅÅÐò²âÊÔÀà
 *
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 * 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¡ÔñÒƶ¯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¡£
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 */
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;


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