[알고리즘] 배열 역순

· 2014-09-24 (수) 16:30:15 · 4143
// 배열 역순
function reverse(&$a) {
    $start = 0; // 배열시작 인덱스 
    $count = count($a);
$end = $count - 1; // 배열끝 인텍스,  0 부터 시작하니 배열갯수에서 1을 뺌

    while ($start < $count/2) {
        /* 요소 교체 */
        $temp = $a[$end];
        $a[$end--] = $a[$start];
        $a[$start++] = $temp;
    }
}
$a = array(1,2,3,4,5,6,7,8,9);

foreach ($a as $k => $v) echo($a[$k]);
echo '<br />';

reverse($a);

foreach ($a as $k => $v) echo($a[$k]);

 

/* output 

123456789

987654321

*/ 

|
댓글을 작성하시려면 로그인이 필요합니다.

프로그램

8,188건
+
제목 글쓴이 날짜 조회
15-11-20 조회 2,461
15-11-20 조회 2,446
15-11-20 조회 2,569
15-11-18 조회 2,570
15-11-18 조회 2,603
15-11-18 조회 2,550
15-11-17 조회 2,795
15-11-17 조회 2,542
15-11-17 조회 2,506
15-11-16 조회 2,568
15-11-16 조회 2,542
15-11-16 조회 2,743
15-11-15 조회 2,744
15-11-15 조회 2,569
15-11-15 조회 2,663
15-11-09 조회 2,852
15-11-09 조회 2,640
15-11-09 조회 2,701
15-11-06 조회 3,290
15-11-05 조회 2,725
15-11-05 조회 2,635
15-11-05 조회 2,744
15-11-04 조회 2,705
15-11-04 조회 2,683
15-11-04 조회 2,667
15-11-04 조회 2,971
15-11-04 조회 2,762
15-11-03 조회 2,761
15-11-02 조회 2,798
15-11-02 조회 2,586
15-11-02 조회 2,605
15-10-31 조회 2,506
15-10-27 조회 2,772
15-10-23 조회 2,680
15-10-23 조회 2,729
15-10-19 조회 3,826
15-10-15 조회 3,436
15-08-03 조회 3,091
15-07-29 조회 2,919
15-07-12 조회 3,390
15-05-07 조회 4,975
15-05-06 조회 4,599
15-05-06 조회 5,321
15-04-04 조회 4,404
15-04-04 조회 4,039
15-04-01 조회 5,647
15-02-10 조회 4,392
15-01-31 조회 4,415
15-01-23 조회 4,088
14-12-30 조회 3,633
14-12-23 조회 3,809
14-12-02 조회 4,190
14-10-17 조회 4,619
14-10-17 조회 4,769
14-10-07 조회 4,126
14-10-07 조회 5,310
14-10-04 조회 4,407
14-09-24 조회 4,696
14-09-24 조회 4,667
14-09-24 조회 4,144
14-09-23 조회 3,937
14-09-22 조회 3,604
14-09-21 조회 4,009
14-09-21 조회 4,234
14-09-21 조회 3,714
14-09-20 조회 4,284
14-09-19 조회 3,828
14-09-19 조회 3,506
14-09-19 조회 4,018
14-09-19 조회 3,700
14-09-18 조회 3,522
14-09-18 조회 3,965
14-09-18 조회 4,264
14-09-18 조회 3,864
14-09-18 조회 3,825
14-09-18 조회 3,871
14-09-18 조회 3,957
14-09-18 조회 4,706
14-09-17 조회 3,715
14-09-15 조회 3,811
14-09-11 조회 4,094
14-08-26 조회 3,984
14-08-26 조회 3,679
14-08-26 조회 3,449
14-08-26 조회 3,961
14-08-26 조회 3,817
14-08-26 조회 3,697
14-08-26 조회 3,789
14-08-26 조회 3,850
14-08-26 조회 3,637
14-08-26 조회 3,842
14-08-26 조회 3,837
14-08-26 조회 3,820
14-08-26 조회 3,857
14-08-26 조회 3,625
14-08-26 조회 3,623
14-08-26 조회 3,813
14-08-26 조회 3,509
14-08-26 조회 3,583
14-08-26 조회 3,385