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±Û¾´ÀÌ :±è±ÙÈ£ 2000³â 3¿ù 22ÀÏ 08:19:53

In Reply to: ±âº»ÀûÀα¸Á¶ posted by ¿µµ¹ÀÌ on 2000³â 3¿ù 21ÀÏ 09:20:55:

stackÀ̶õ ±âº»ÀûÀ¸·Î LIFO(Last In First Out)ÀÌÁö¿ä..±×¸®°í.. Á¦°¡ ¹è¿î¹Ù·Î´Â ¸î°¡Áö°¡ Àִµ¥.. ±×Áß¿¡¼­ ArrayÀ» »ç¿ëÇÑ°Å¿Í ArrayListÀ» »ç¿ëÇÑ°Ô ÀÖ±¸¿ä.. ArrayList¤¤,¤¤ ±âº»ÀûÀ¸·Î VectorÀÇ ÇüÅÂ¿Í Èí»çÇÏÁö¿ä.. ±×¸®°í, import±¸ºÐÀÌ ÇÊ¿äÇϱ¸¿ä.(import java.util.*;)ÇÏÁö¸¸.. ÀúÈñ ±³¼ö´ÔÀº.. ¿ÀÈ÷·Á ArrayÂÊÀ» ±ÇÇÏ´õ±º¿ä.. (¸ð..±× ÀÌÀ¯¾ß ÇлýµéÀÌ´Ï Á»´õ ¿ø·Ð¿¡¼­ºÎÅÍ ½ÃÀÛÇ϶ó´Â ±íÀº ¶æÀÌ°ÚÁö¸¸¿ä..-,.-;; »ç½Ç ArrayList°¡ ´õ ½±´õ¶ó±¸¿ä..)
±×·³ ´ëÃæ Array¤Ò ÇüÅ·Π¾Ë·Áµå¸±²²¿ä..
class ArrayStack
{
private Object[] contents;
private int max, lastIndex;
public ArrayStatck()
{
contents = new Objects[100];
//À½..ÀÏ´Ü 100°³·Î Array size¸¦ Á¤ÇսôÙ.
max = 100;
lastIndex = -1;
//Array¿¡¼­ -1Àº nullÀ» ÀǹÌÇÏÁÒ..
}//end constructor


public boolean inEmpty()
{return (lastIndex ==-1);}

public Object pop()
{
if(isEmpty())
return null;
//¸¸¾à Array°¡ °ø¹éÀ̸é..
else
{Object temp = contents[lastIndex];
/*¾îÂ÷ÇÇ Array¿¡ »©¾î³»´Â°Ç ¸Ç ¸¶Áö¸· À§Ä¡ÀÇ °ÍÀÌ ³ª¿À´Ï±ñ.. current index¸¦ Áý¾î³ÖÀ¸¸é µÇ°ÚÁö¿ä.*/
lastIndex --;
//Çϳª¸¦ »©¾úÀ¸´Ï Array sizeµµ Çϳª°¨¼Ò.
return temp;}
}
........
À½³Ä.. ÀÏ´Ü »©³»´Â°Ç¸¸ ½áºÃ¾î¿ä... Èå.. Áý¾î³Ö´Â°Íµµ ÀÌ°Å¿Í ºñ½ÁÇϱ¸¿ä.. ÇÏÁö¸¸.. µü µÎ°¡Áö »ý°¢ÇϼžßÇϴ°Ô.. ¿ì¼± Áý¾î³ÖÀ»¶§ ¿ì¼± »õ·Ó°Ô Array¸¦ ¸¸µå¼Å¾ßÇϱ¸¿ä..±×¸®°í³ª¼± ±âÁ¸ÀÇ °ÍµéÀº ¸ðÁ¶¸® ÀÌ »õ·Ó°Ô ¸¸µé¾îÁø Array¿¡ ³ÖÀ¸¼¼¿ä..(À̶§ ´ç¿¬È÷ Array size´Â +1ÀÌ µÇ¾î¾ß°ÚÁö¿ä..) ±×·±ÈÄ¿¡ lastIndex¿¡ Áý¾î³ÖÀ»°ÍÀ» ³Ö¾îÁÖ¸é µÇ°Ú³×¿ä.. contents[lastIndex] = Áý¾î³ÖÀ»°Í; ÀÌ·±½ÄÀ¸·Î.. Âü..±×¸®°í ³ªÁß¿¡ driver class¿¡¼­ Á¶½ÉÇϼžßÇϴ°Ç.. ÀÌ°Ç Object typeÀ¸·Î return µÇ´Â°Å´Ï.. ²À castingÇϽô°ŠÀØÁö¸¶½Ã±¸¿ä.. ±×·³..Çà¿îÀ»..
p.s¾ÈµÇ¹È..¸áÇϼ¼¿ä...


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