ÔÚJAVAÀïÃæ,¿ÉÒÔÓø´ÖÆÓï¾ä¡±A=B¡±¸ø»ù±¾ÀàÐ͵ÄÊý¾Ý´«µÝÖµ,µ«ÊÇÈç¹ûA,BÊÇÁ½¸öͬÀàÐ͵ÄÊý×é,¸´ÖƾÍÏ൱ÓÚ½«Ò»¸öÊý×é±äÁ¿µÄÒýÓô«µÝ¸øÁíÒ»¸öÊý×é;Èç¹ûÒ»¸öÊý×é·¢Éú¸Ä±ä,ÄÇôÒýÓÃͬһÊý×éµÄ±äÁ¿Ò²Òª·¢Éú¸Ä±ä.
ÒÔÏÂÊǹéÄɵÄJAVAÖи´ÖÆÊý×éµÄ·½·¨£º
1.ʹÓÃFORÑ»·,½«Êý×éµÄÿ¸öÔªËظ´ÖÆ»òÕ߸´ÖÆÖ¸¶¨ÔªËØ,²»¹ýЧÂʲîÒ»µã
2.ʹÓÃclone·½·¨,µÃµ½Êý×éµÄÖµ,¶ø²»ÊÇÒýÓÃ,²»Äܸ´ÖÆÖ¸¶¨ÔªËØ,Áé»îÐÔ²îÒ»µã
3.ʹÓÃSystem.arraycopy(src, srcPos, dest, destPos, length)·½·¨,ÍƼöʹÓÃ
¾ÙÀý£º
1.ʹÓÃFORÑ»·
int[] src={1,3,5,6,7,8};
int[] dest = new int[6];
for(int i=0;i<6;i++) dest[i] = src[i];
2.ʹÓÃclone
int[] src={1,3,5,6,7,8};
int[] dest;
dest=(int[]) src.clone();//ʹÓÃclone´´½¨
¸±±¾,×¢ÒâcloneҪʹÓÃÇ¿ÖÆת»»
3.ʹÓÃSystem.arraycopy
int[] src={1,3,5,6,7,8};
int[] dest = new int[6];
System.arraycopy(src, 0, dest, 0, 6);
¡ª¡ª¡ª¡ª¡ª¡ª¡ª¡ª¡ª¡ª¡ª¡ª¡ª¡ª¡ª¡ª¡ª¡ª¡ª¡ª¡ª¡ª-
SystemÌṩÁËÒ»¸ö¾²Ì¬·½·¨arraycopy(),ÎÒÃÇ¿ÉÒÔʹÓÃËüÀ´ÊµÏÖÊý×éÖ®¼äµÄ¸´ÖÆ.
Æ亯ÊýÔÐÍÊÇ£º
public static void arraycopy(Object src, int srcPos, Object dest, int destPos, int length)
src:Ô´Êý×é; srcPos:Ô´Êý×éÒª¸´ÖƵÄÆðʼλÖÃ;
dest:Ä¿µÄÊý×é; destPos:Ä¿µÄÊý×é·ÅÖõÄÆðʼλÖÃ;
length:¸´ÖƵij¤¶È.
×¢Ò⣺src and dest¶¼±ØÐëÊÇͬÀàÐÍ»òÕß¿ÉÒÔ½øÐÐת»»ÀàÐ͵ÄÊý×飮
ÓÐȤµÄÊÇÕâ¸öº¯Êý¿ÉÒÔʵÏÖ×Ô¼ºµ½×Ô¼º¸´ÖÆ,
±ÈÈ磺int[] fun ={0,1,2,3,4,5,6};
System.arraycopy(fun,0,fun,3,3);
Ôò½á¹ûΪ£º{0,1,2,0,1,2,6};