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2Â÷¿ø ¹è¿ÀÇ ÇٽɻçÇ×
n 2Â÷¿ø ¹è¿ÀÇ ¼±¾ð°ú ÃʱâÈ
n 2Â÷¿ø ¹è¿Àº ÂüÁ¶ÀÇ ÂüÁ¶(¹è¿ÀÇ ¹è¿)
¸ÕÀú, 2Â÷¿ø ¹è¿ÀÇ ¼±¾ðºÎÅÍ »ìÆì º¸±â·Î ÇÏÁÒ. 2Â÷¿ø ¹è¿Àº 1Â÷¿ø ¹è¿ÀÇ ÃʱâÈ¿Í °°ÀÌ Çϳª¾¿ ¼±¾ðÇÒ ¼öµµ ÀÖÀ¸¸ç ÇѲ¨¹ø¿¡ ÃʱâÈ ½Ãų ¼öµµ ÀÖ½À´Ï´Ù. ±× ¹æ¹ýÀº ¾Æ·¡¿Í °°½À´Ï´Ù.
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±×¸²¿¡¼ º¸´Â ¹Ù¿Í °°ÀÌ 3°³ÀÇ º¯¼ö¸¦ ¹¾î¼ °¢°¢ mydream[0], mydream[1]ÀÇ ¹è¿·Î ¸¸µé°í ´Ù½Ã ¹è¿ mydream[0], mydream[1]À» ¹¾î¼ mydreamÀ̶ó´Â ¹è¿·Î ¹¾ú½À´Ï´Ù. Áï, mydreamÀº ¹è¿ÀÇ ¹è¿ÀÎ °ÍÀÔ´Ï´Ù. ±×¸®°í, mydreamÀº µÎ°³ÀÇ ¹è¿ÀÌ ÀÖ°í ±× ¸¶Áö¸·¿¡ °¢°¢ 3°³ÀÇ º¯¼ö¸¦ °¡Áö°í ÀÖ´Â °ÍÀÔ´Ï´Ù. ±×·¸´Ù¸é mydream[0], mydream[1]Àº ¹è¿·Î½á »ç¿ëÇÒ ¼ö ÀÖÀ»±î¿ä? ¸Â½À´Ï´Ù. ¿Ïº®ÇÑ ÇϳªÀÇ ¹è¿·Î¼ »ç¿ëÇÒ ¼ö ÀÖ½À´Ï´Ù. ÀÌ·¯ÇÑ °ÍÀ» ¿¹Á¦·Î Áõ¸íÇØ º¸µµ·Ï ÇϰڽÀ´Ï´Ù.
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public class TwoDimensionMain{ public static void main(String[] args){ int[][] mydream1 = new int[][]{{100, 200, 300}, {400,500,600}}; int[][] mydream2 = {{1000, 2000, 3000}, {4000,5000,6000}}; System.out.println("mydream1ÀÇ °¹¼ö:" + mydream1.length); System.out.println("mydream1[0]ÀÇ °¹¼ö:" + mydream1[0].length); System.out.println("mydream1[1]ÀÇ °¹¼ö:" + mydream1[1].length); System.out.println("mydream2ÀÇ °¹¼ö:" + mydream2.length); System.out.println("mydream2[0]ÀÇ °¹¼ö:" + mydream2[0].length); System.out.println("mydream2[1]ÀÇ °¹¼ö:" + mydream2[1].length); for(int i=0; i<mydream1.length; i++) for(int j=0; j<mydream1[i].length; j++) System.out.println("mydream1["+i+"]["+j+"]=>"+ mydream1[i][j] + "\t"); for(int i=0; i<mydream2.length; i++) for(int j=0; j<mydream2[i].length; j++) System.out.println("mydream2["+i+"]["+j+"]=>"+ mydream2[i][j] + "\t"); } } |
C:\examples\6. Array>javac TwoDimensionMain.java C:\examples\6. Array>java TwoDimensionMain mydream1ÀÇ °¹¼ö:2 mydream1[0]ÀÇ °¹¼ö:3 mydream1[1]ÀÇ °¹¼ö:3 mydream2ÀÇ °¹¼ö:2 mydream2[0]ÀÇ °¹¼ö:3 mydream2[1]ÀÇ °¹¼ö:3 mydream1[0][0]=>100 mydream1[0][1]=>200 mydream1[0][2]=>300 mydream1[1][0]=>400 mydream1[1][1]=>500 mydream1[1][2]=>600 mydream2[0][0]=>1000 mydream2[0][1]=>2000 mydream2[0][2]=>3000 mydream2[1][0]=>4000 mydream2[1][1]=>5000 mydream2[1][2]=>6000 |
ÀÌ ¿¹Á¦¿¡¼´Â 2Â÷¿ø ¹è¿ÀÇ ÃʱâÈ ºÎºÐÀ» Á¤È®ÇÏ°Ô º¸¿© ÁÖ°í ÀÖ½À´Ï´Ù. 2Â÷¿ø ¹è¿Àº 1Â÷¿ø ¹è¿°ú ÃʱâÈ ¹æ¹ýÀÌ °°Áö¸¸, ºí·ÏÀ» Á¤ÇØÁÖ´Â °ÍÀÌ ´Ù¸¨´Ï´Ù.
2Â÷¿ø ¹è¿ÀÇ ¼±¾ð°ú Ãʱâȸ¦ µ¿½Ã¿¡ ÇÏ´Â ¹æ¹ý
n int[][] mydream1 = new int[][]{{100, 200, 300}, {400,500,600}};
n int[][] mydream2 = {{1000, 2000, 3000}, {4000,5000,6000}};
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