슈

[알고리즘] 배열 역순

· 2014-09-24 (수) 16:30:15 · 4291
// 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
12-08-29 조회 4,181
12-08-07 조회 3,842
12-08-03 조회 3,654
12-07-31 조회 3,760
12-07-30 조회 3,710
12-07-16 조회 3,911
12-07-15 조회 3,747
12-07-07 조회 3,606
12-07-06 조회 3,805
12-07-03 조회 3,765
12-06-29 조회 3,382
12-06-22 조회 3,755
12-06-17 조회 4,013
12-05-21 조회 3,937
12-05-02 조회 3,457
12-05-02 조회 4,248
12-05-02 조회 3,372
12-04-30 조회 3,570
12-04-30 조회 3,254
12-03-17 조회 4,123
12-03-10 조회 3,449
12-03-08 조회 3,974
12-03-03 조회 3,688
12-02-27 조회 5,106
12-02-17 조회 4,395
12-02-16 조회 4,678
12-02-03 조회 3,342
12-01-31 조회 3,253
12-01-24 조회 3,250
12-01-17 조회 3,958
12-01-05 조회 3,498
11-12-30 조회 3,232
11-12-23 조회 4,786
11-12-08 조회 3,556
11-12-07 조회 4,513
11-11-27 조회 3,943
11-11-25 조회 4,269
11-11-23 조회 3,711
11-11-22 조회 3,569
11-11-09 조회 3,278
11-10-23 조회 3,219
11-10-19 조회 3,176
11-10-08 조회 2,858
11-10-04 조회 2,858
11-10-04 조회 5,316
11-09-01 조회 4,395
11-08-13 조회 2,568
11-08-06 조회 3,251
11-07-11 조회 3,647
11-06-27 조회 3,005
11-06-21 조회 2,669
11-06-13 조회 2,476
11-06-07 조회 2,486
11-05-26 조회 2,443
11-04-20 조회 2,776
11-03-21 조회 2,876
11-03-18 조회 2,565
11-03-11 조회 2,583
11-02-07 조회 2,409
11-01-18 조회 2,735
11-01-12 조회 2,457
11-01-06 조회 2,549
10-12-10 조회 2,806
10-12-09 조회 2,658
10-12-08 조회 5,090
10-11-29 조회 2,924
10-11-28 조회 2,828
10-11-28 조회 2,661
10-11-19 조회 2,854
10-11-04 조회 2,730
10-10-21 조회 2,454
10-10-19 조회 3,412
10-10-12 조회 2,738
10-10-07 조회 2,574
10-09-30 조회 3,528
10-09-17 조회 3,940
10-09-17 조회 3,887
10-05-31 조회 3,596
09-12-31 조회 3,730
09-07-23 조회 5,056
08-09-16 조회 3,254
08-09-06 조회 3,000
08-09-04 조회 3,423
08-08-16 조회 4,451
08-08-15 조회 3,319
08-08-14 조회 4,533
08-08-12 조회 4,003
08-07-23 조회 2,819
08-07-10 조회 3,767
08-07-04 조회 2,997
08-06-27 조회 7,633
08-06-19 조회 4,946
08-05-27 조회 5,549
08-05-25 조회 5,384
08-05-23 조회 3,463
08-05-23 조회 4,629
08-05-21 조회 4,976
08-05-20 조회 4,092
08-05-20 조회 3,314
08-04-18 조회 4,389