1'den N'ye tamsayıların rastgele bir listesini göz önünde bulundurun. Yalnızca aşağıdaki işlemleri kullanarak sıralamak istiyorsunuz:

1. Takas ilk ve son liste öğelerini. (S)
2. Pop ilk elemanını kapalı ve listenin sonuna eklenecek. (P)

Bu her zaman mümkündür, çünkü herhangi bir liste yeterli sayıda bitişik eleman takasıyla sıralanabilir. S ve P'yi kullanarak, komşu herhangi bir öğeyi, söz konusu iki öğe listedeki ilk ve son öğe olana kadar P'yi, ardından değiştirmek için S'yi ve ardından orijinal dizinlerde olana kadar tekrar P'yi çağırarak, P'yi arayarak değiştirebilirsiniz. ).

Ancak, S ve P işlemlerinin sayısı açısından, bu yöntemin çoğu liste için en uygun olması muhtemel değildir.

Meydan okuma

1'den N (N> 1) 'e kadar olan sayılarla değişen bir program veya işlev yazın. Bir liste veya dize ya da uygun olan her şey olarak verilebilir. Soldan sağa uygulandığında permütasyonu sıralayacak bir S ve P dizisi çıkarması gerekir. Bu sekansın optimal olarak kısa olması gerekmez, ancak kısaltması daha iyidir (bkz. Puanlama).

Örnek

Giriş ise [2, 1, 3]çıkış olabilir SPçünkü

• S uygulanan [2, 1, 3]bu yapar [3, 1, 2],
• ve P sıralanır [3, 1, 2]hale getirmek için uygulanır [1, 2, 3].

Doğrulayıcı

Bu yığın pasajı, bir dizinin gerçekten listeyi sıraladığını doğrulamak için kullanılabilir. Listenin köşeli parantezleri olmalı ve virgülle ayrılmış olmalıdır. SP dizisi sadece bir S's ve P' s dizesidir .

<style>*{font-family:monospace}</style><script>function swap(list) {var tmp = list[0];list[0] = list[list.length - 1];list[list.length - 1] = tmp;}function pop(list) {list.push(list.shift())}function check() {var result = 'Sorted sucessfully.';var details = '';try {var list = eval(document.getElementById('list').value);var seq = document.getElementById('seq').value;details += 'Sequence: ' + seq + '<br>Steps:<br>' + list + ' <-- original';for(var i = 0; i < seq.length; i++) {if (seq.charAt(i) == 'S')swap(list);else if (seq.charAt(i) == 'P')pop(list);details += ' (' + i + ')<br>' + list;}details += ' <-- final (' + i + ')';for(var i = 1; i < list.length; i++) {if (list[i-1] > list[i]) {result = 'Sorting failed!';break;}}} catch(e) {result = 'Error: ' + e;}document.getElementById('result').innerHTML = result;document.getElementById('details').innerHTML = details;}</script><p>List<br><input id='list'type='text'size='60'value='[2, 1, 3]'></p><p>SP Sequence<br><textarea id='seq'rows='1'cols='60'>SP</textarea><br></p><button type='button'onclick='check()'>Check</button><p id='result'></p><p id='details'></p>

puanlama

Algoritmanız N = 2 ila 256 için doğru, ama muhtemelen düşük optimal SP dizileri üretmelidir. Bu aralıktaki herhangi bir permütasyon için iyi bir modern bilgisayarda 5 dakikadan daha az bir sürede çalışmalıdır .

Puanınız, algoritmanızın aşağıda verilen 30 listenin tümünü sıralamak için ihtiyaç duyduğu toplam S ve P işlemlerinin sayısıdır. En düşük puan kazanır.

Programınızı bu verilere uyacak şekilde kodlayamazsınız. Gerekirse, kazananı belirlemek için daha fazla test verisi ekleyebilirim.

1. Length 3
[2, 1, 3]
2. Length 7
[2, 7, 5, 3, 4, 6, 1]
3. Length 41
[7, 12, 17, 2, 14, 15, 33, 20, 37, 18, 9, 25, 41, 26, 39, 29, 16, 5, 23, 24, 35, 38, 32, 6, 11, 21, 27, 8, 40, 3, 10, 36, 13, 30, 31, 28, 1, 4, 19, 22, 34]
4. Length 52
[19, 49, 34, 26, 38, 3, 14, 37, 21, 39, 46, 29, 18, 6, 15, 25, 28, 47, 22, 41, 32, 51, 50, 5, 45, 4, 30, 44, 10, 43, 20, 17, 13, 36, 48, 27, 35, 24, 8, 12, 40, 2, 1, 16, 7, 31, 23, 33, 42, 52, 9, 11]
5. Length 65
[12, 53, 4, 5, 17, 32, 58, 54, 18, 43, 21, 26, 51, 45, 9, 2, 35, 28, 40, 61, 57, 27, 62, 39, 24, 59, 36, 25, 20, 33, 63, 56, 64, 47, 38, 7, 13, 34, 16, 30, 49, 22, 37, 3, 48, 11, 52, 1, 29, 42, 50, 23, 6, 8, 60, 65, 46, 10, 41, 31, 44, 15, 14, 19, 55]
6. Length 69
[58, 15, 63, 18, 24, 59, 26, 37, 44, 67, 14, 52, 2, 31, 68, 54, 32, 17, 55, 50, 42, 56, 65, 29, 13, 41, 7, 45, 53, 35, 21, 39, 61, 23, 49, 12, 60, 46, 27, 57, 28, 40, 10, 69, 1, 6, 19, 62, 8, 30, 64, 34, 3, 43, 38, 20, 25, 33, 66, 47, 4, 36, 16, 11, 5, 22, 51, 48, 9]
7. Length 75
[14, 69, 1, 43, 32, 42, 59, 37, 70, 63, 57, 60, 56, 73, 67, 6, 11, 36, 31, 22, 40, 7, 21, 35, 50, 64, 28, 41, 18, 17, 75, 54, 51, 19, 68, 33, 45, 61, 66, 52, 49, 65, 4, 72, 23, 34, 9, 15, 38, 16, 3, 71, 29, 30, 48, 53, 10, 8, 13, 47, 20, 55, 74, 27, 25, 62, 46, 24, 44, 39, 2, 26, 58, 12, 5]
8. Length 80
[3, 65, 44, 14, 19, 6, 11, 29, 79, 35, 42, 16, 68, 7, 62, 30, 38, 46, 15, 9, 75, 5, 52, 32, 22, 70, 64, 13, 21, 47, 10, 4, 55, 40, 45, 56, 77, 27, 23, 72, 17, 71, 53, 20, 18, 25, 73, 59, 36, 34, 37, 57, 1, 69, 24, 58, 33, 76, 2, 12, 49, 61, 78, 67, 66, 63, 50, 80, 28, 48, 26, 51, 41, 60, 31, 54, 39, 8, 74, 43]
9. Length 103
[40, 62, 53, 6, 32, 85, 8, 83, 33, 29, 87, 93, 22, 37, 80, 12, 74, 69, 64, 9, 18, 98, 17, 45, 60, 38, 10, 103, 19, 5, 54, 15, 90, 100, 79, 91, 46, 82, 43, 31, 51, 96, 30, 70, 76, 16, 55, 77, 11, 65, 58, 75, 61, 3, 28, 24, 101, 20, 41, 72, 86, 56, 35, 50, 78, 27, 67, 95, 44, 68, 48, 26, 39, 97, 21, 49, 102, 73, 63, 7, 71, 52, 1, 88, 34, 42, 14, 47, 36, 99, 4, 13, 94, 89, 59, 92, 57, 25, 23, 66, 81, 2, 84]
10. Length 108
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108]
11. Length 109
[48, 89, 25, 64, 8, 69, 81, 98, 107, 61, 106, 63, 59, 50, 83, 24, 86, 68, 100, 104, 56, 88, 46, 62, 94, 4, 47, 33, 19, 1, 77, 102, 9, 30, 44, 26, 16, 80, 67, 75, 70, 96, 108, 45, 79, 51, 12, 38, 73, 37, 65, 31, 60, 22, 28, 3, 43, 71, 105, 91, 93, 101, 13, 97, 29, 72, 82, 87, 27, 5, 17, 10, 34, 84, 53, 15, 78, 41, 85, 6, 14, 57, 76, 7, 23, 99, 32, 95, 49, 2, 21, 109, 74, 39, 11, 103, 18, 90, 35, 40, 58, 20, 55, 52, 36, 54, 42, 92, 66]
12. Length 151
[61, 7, 8, 79, 78, 4, 48, 13, 14, 117, 12, 96, 130, 118, 63, 110, 72, 57, 86, 126, 62, 10, 29, 102, 99, 28, 56, 135, 11, 151, 141, 97, 45, 109, 38, 150, 40, 149, 52, 140, 106, 80, 66, 134, 125, 137, 31, 85, 68, 94, 36, 26, 95, 92, 49, 25, 120, 148, 33, 73, 41, 100, 58, 127, 60, 122, 133, 9, 19, 81, 59, 55, 103, 146, 42, 21, 128, 75, 101, 82, 50, 142, 131, 76, 20, 69, 139, 83, 16, 64, 17, 124, 90, 138, 37, 1, 34, 43, 129, 77, 23, 35, 144, 121, 113, 115, 114, 67, 98, 70, 145, 104, 71, 5, 119, 6, 18, 88, 116, 111, 132, 39, 89, 24, 15, 107, 27, 65, 30, 47, 143, 93, 53, 108, 2, 74, 123, 44, 51, 54, 87, 147, 84, 3, 112, 46, 32, 91, 136, 22, 105]
13. Length 173
[93, 14, 141, 125, 64, 30, 24, 85, 44, 68, 91, 22, 103, 155, 117, 114, 123, 51, 131, 72, 67, 61, 5, 41, 10, 20, 129, 86, 154, 108, 161, 2, 82, 153, 96, 50, 136, 121, 128, 126, 120, 111, 89, 113, 104, 84, 18, 109, 42, 83, 162, 124, 173, 116, 12, 54, 52, 39, 122, 49, 46, 1, 130, 71, 152, 73, 56, 34, 149, 75, 133, 8, 74, 45, 88, 23, 7, 60, 115, 134, 53, 119, 106, 81, 112, 31, 35, 172, 159, 38, 59, 69, 142, 146, 110, 170, 160, 166, 43, 58, 4, 107, 78, 156, 47, 33, 145, 63, 163, 27, 70, 77, 36, 16, 100, 26, 19, 151, 57, 32, 15, 13, 40, 169, 98, 132, 135, 62, 66, 90, 102, 171, 99, 148, 80, 144, 147, 168, 94, 143, 17, 3, 140, 97, 11, 65, 55, 92, 95, 127, 167, 150, 87, 118, 28, 137, 9, 29, 105, 157, 25, 165, 158, 21, 164, 101, 79, 76, 6, 138, 48, 37, 139]
14. Length 177
[68, 117, 61, 159, 110, 148, 3, 20, 169, 145, 136, 1, 120, 109, 21, 58, 52, 97, 65, 168, 34, 134, 111, 176, 13, 156, 172, 53, 55, 124, 177, 88, 92, 23, 72, 26, 104, 121, 133, 73, 39, 140, 25, 71, 119, 158, 146, 128, 18, 94, 113, 45, 60, 96, 30, 5, 116, 153, 90, 115, 67, 80, 112, 154, 9, 17, 10, 33, 81, 38, 95, 118, 35, 160, 151, 150, 76, 77, 14, 147, 173, 135, 162, 114, 27, 100, 167, 74, 69, 165, 108, 79, 91, 48, 105, 125, 129, 75, 93, 11, 12, 64, 24, 170, 142, 98, 44, 37, 43, 78, 16, 28, 166, 155, 138, 164, 122, 163, 107, 130, 86, 56, 2, 161, 63, 126, 131, 144, 82, 106, 103, 32, 132, 54, 41, 171, 70, 85, 19, 143, 137, 87, 84, 66, 99, 102, 15, 49, 123, 175, 89, 51, 141, 62, 50, 36, 152, 47, 42, 8, 7, 46, 29, 22, 149, 139, 4, 40, 83, 6, 59, 57, 174, 31, 127, 101, 157]
15. Length 192
[82, 130, 189, 21, 169, 147, 160, 66, 133, 153, 143, 116, 49, 13, 63, 61, 94, 164, 35, 112, 141, 62, 87, 171, 19, 3, 93, 83, 149, 64, 34, 170, 129, 182, 101, 77, 14, 91, 145, 23, 32, 92, 187, 54, 184, 120, 109, 159, 27, 44, 60, 103, 134, 52, 122, 33, 78, 88, 108, 45, 15, 79, 137, 80, 161, 69, 6, 139, 110, 67, 43, 190, 152, 59, 173, 125, 168, 37, 151, 132, 1, 178, 20, 114, 119, 144, 25, 146, 42, 136, 162, 123, 31, 107, 131, 127, 51, 105, 2, 65, 28, 102, 76, 24, 135, 174, 9, 111, 98, 39, 74, 142, 70, 121, 154, 38, 113, 75, 40, 86, 100, 106, 181, 117, 95, 85, 138, 41, 167, 172, 4, 186, 17, 16, 104, 71, 81, 73, 57, 8, 140, 118, 158, 12, 148, 53, 29, 185, 18, 150, 22, 188, 72, 128, 84, 96, 47, 192, 126, 56, 163, 50, 157, 165, 97, 166, 180, 7, 46, 30, 191, 124, 5, 48, 175, 68, 36, 89, 177, 11, 176, 183, 99, 90, 55, 26, 10, 58, 115, 155, 179, 156]
16. Length 201
[23, 8, 58, 24, 19, 87, 98, 187, 17, 130, 116, 141, 129, 166, 29, 191, 81, 105, 137, 171, 39, 67, 46, 150, 102, 26, 163, 183, 170, 72, 160, 43, 9, 197, 189, 173, 196, 68, 100, 16, 93, 175, 74, 28, 133, 122, 27, 79, 107, 162, 62, 192, 108, 104, 97, 12, 60, 155, 161, 82, 167, 158, 149, 30, 124, 22, 168, 115, 134, 94, 34, 184, 127, 121, 177, 112, 142, 95, 164, 41, 59, 55, 143, 85, 176, 3, 156, 148, 153, 42, 180, 145, 78, 147, 119, 109, 139, 178, 61, 181, 136, 157, 91, 84, 47, 71, 70, 118, 18, 63, 80, 56, 123, 194, 117, 195, 152, 66, 48, 11, 99, 201, 128, 151, 138, 64, 21, 131, 159, 103, 75, 49, 169, 113, 53, 114, 69, 54, 165, 38, 101, 76, 200, 199, 140, 125, 193, 88, 32, 51, 126, 14, 13, 77, 52, 50, 198, 172, 5, 92, 96, 15, 106, 182, 31, 83, 120, 57, 135, 65, 7, 154, 20, 25, 45, 1, 6, 73, 40, 174, 132, 10, 111, 186, 190, 4, 36, 188, 185, 146, 44, 110, 179, 2, 90, 86, 35, 37, 33, 89, 144]
17. Length 201
[97, 146, 168, 5, 56, 147, 189, 92, 154, 13, 185, 109, 45, 126, 17, 10, 53, 98, 88, 41, 163, 99, 157, 35, 125, 34, 173, 171, 138, 104, 149, 172, 60, 183, 36, 65, 32, 180, 87, 167, 59, 84, 188, 11, 69, 57, 174, 61, 66, 7, 8, 111, 91, 58, 128, 94, 141, 139, 31, 78, 156, 70, 16, 162, 26, 33, 106, 175, 103, 21, 164, 110, 159, 80, 200, 82, 123, 144, 44, 148, 4, 55, 179, 184, 186, 124, 63, 107, 54, 112, 137, 165, 121, 25, 132, 196, 90, 89, 71, 160, 95, 117, 197, 37, 108, 39, 115, 12, 52, 119, 120, 79, 29, 49, 93, 22, 122, 161, 76, 38, 72, 169, 85, 178, 77, 105, 190, 100, 9, 86, 177, 194, 2, 136, 114, 51, 68, 19, 47, 195, 113, 193, 67, 96, 182, 170, 50, 83, 143, 166, 3, 192, 24, 127, 140, 176, 134, 158, 116, 199, 1, 135, 118, 145, 14, 15, 155, 48, 42, 73, 46, 102, 191, 28, 201, 181, 75, 133, 153, 6, 131, 130, 81, 20, 198, 64, 142, 150, 27, 101, 18, 30, 40, 23, 129, 43, 62, 187, 152, 151, 74]
18. Length 205
[161, 197, 177, 118, 94, 112, 13, 190, 200, 166, 127, 80, 115, 204, 186, 60, 50, 97, 175, 32, 26, 65, 16, 4, 55, 120, 143, 187, 121, 29, 18, 82, 17, 21, 144, 20, 88, 195, 99, 67, 203, 23, 176, 126, 137, 77, 70, 30, 103, 182, 113, 119, 36, 47, 90, 98, 54, 3, 49, 105, 57, 135, 153, 142, 174, 155, 158, 11, 157, 22, 171, 110, 28, 196, 129, 163, 79, 63, 38, 145, 140, 2, 128, 180, 106, 59, 25, 184, 81, 164, 95, 39, 68, 78, 178, 156, 72, 51, 202, 66, 48, 101, 71, 108, 130, 5, 107, 147, 199, 12, 27, 150, 167, 91, 64, 170, 191, 151, 149, 168, 34, 125, 188, 181, 139, 58, 75, 189, 124, 152, 183, 7, 111, 89, 84, 52, 141, 83, 69, 62, 73, 43, 123, 14, 179, 162, 114, 138, 117, 159, 74, 85, 10, 96, 86, 31, 132, 1, 104, 109, 45, 165, 148, 172, 154, 92, 173, 40, 19, 56, 37, 205, 44, 193, 122, 185, 93, 133, 53, 9, 169, 6, 61, 136, 46, 76, 33, 15, 116, 198, 160, 194, 131, 41, 42, 35, 146, 134, 192, 8, 87, 201, 100, 24, 102]
19. Length 211
[200, 36, 204, 198, 190, 161, 57, 108, 180, 203, 135, 48, 134, 47, 158, 10, 41, 11, 23, 127, 167, 121, 109, 211, 201, 1, 42, 40, 86, 104, 147, 139, 145, 101, 144, 166, 176, 92, 118, 54, 182, 30, 58, 123, 124, 67, 125, 154, 187, 168, 103, 17, 72, 98, 12, 184, 59, 87, 174, 93, 45, 116, 73, 69, 74, 80, 56, 14, 34, 85, 38, 185, 165, 110, 164, 151, 43, 192, 62, 4, 140, 170, 197, 111, 173, 141, 65, 77, 70, 136, 206, 83, 100, 148, 25, 183, 209, 189, 150, 33, 46, 16, 64, 114, 71, 102, 91, 39, 177, 196, 169, 128, 129, 44, 75, 188, 146, 26, 84, 138, 162, 194, 105, 37, 35, 88, 156, 130, 193, 19, 179, 82, 106, 181, 153, 28, 53, 21, 195, 66, 159, 115, 113, 112, 191, 172, 63, 143, 178, 94, 160, 186, 31, 29, 90, 68, 205, 155, 119, 117, 157, 107, 60, 79, 171, 149, 6, 24, 27, 50, 51, 126, 15, 133, 2, 131, 7, 49, 207, 163, 18, 120, 199, 61, 52, 32, 208, 20, 210, 13, 78, 55, 137, 202, 152, 8, 81, 76, 9, 97, 22, 99, 132, 95, 122, 89, 175, 5, 3, 96, 142]
20. Length 226
[204, 79, 88, 98, 197, 32, 40, 117, 153, 167, 29, 74, 170, 115, 127, 210, 22, 109, 65, 47, 41, 132, 110, 158, 192, 99, 96, 224, 190, 143, 33, 225, 195, 19, 70, 73, 54, 161, 75, 179, 181, 207, 26, 221, 66, 130, 152, 131, 30, 35, 155, 69, 68, 38, 129, 95, 116, 214, 7, 186, 62, 27, 212, 125, 216, 86, 148, 164, 141, 4, 140, 222, 16, 46, 12, 215, 78, 219, 211, 134, 118, 171, 121, 52, 123, 56, 220, 15, 25, 100, 137, 163, 51, 91, 10, 83, 55, 187, 182, 201, 149, 160, 8, 14, 218, 77, 3, 184, 114, 43, 122, 135, 142, 104, 120, 198, 45, 108, 85, 189, 151, 175, 136, 165, 226, 97, 124, 200, 60, 172, 20, 67, 1, 174, 87, 102, 119, 188, 223, 199, 103, 89, 49, 213, 57, 9, 101, 112, 36, 176, 194, 92, 145, 180, 168, 111, 94, 178, 39, 166, 193, 17, 2, 154, 58, 156, 217, 13, 80, 202, 206, 169, 107, 177, 144, 205, 139, 93, 34, 64, 106, 150, 146, 126, 185, 208, 63, 203, 105, 18, 191, 53, 183, 209, 6, 23, 84, 5, 61, 59, 162, 128, 37, 50, 28, 159, 173, 196, 24, 31, 72, 138, 82, 48, 133, 147, 42, 113, 81, 90, 71, 21, 11, 157, 76, 44]
21. Length 227
[197, 52, 91, 42, 29, 113, 82, 68, 147, 225, 80, 167, 117, 142, 140, 216, 65, 195, 97, 61, 133, 209, 214, 58, 152, 71, 56, 182, 201, 163, 227, 186, 63, 171, 207, 102, 161, 136, 224, 146, 92, 175, 45, 217, 6, 99, 20, 119, 210, 93, 77, 211, 21, 70, 90, 96, 115, 100, 183, 173, 69, 98, 172, 75, 111, 203, 19, 129, 35, 155, 74, 37, 23, 51, 192, 212, 33, 64, 59, 194, 112, 135, 1, 184, 5, 166, 185, 84, 199, 138, 144, 86, 128, 26, 190, 73, 179, 27, 118, 223, 46, 95, 159, 153, 226, 25, 180, 132, 189, 60, 32, 208, 123, 89, 87, 22, 181, 143, 47, 18, 198, 219, 156, 148, 193, 122, 110, 28, 106, 39, 30, 103, 4, 176, 114, 3, 131, 107, 204, 218, 141, 169, 16, 206, 36, 188, 174, 54, 94, 50, 205, 104, 170, 160, 72, 165, 78, 24, 222, 8, 108, 81, 76, 15, 13, 126, 79, 7, 105, 125, 162, 83, 41, 145, 139, 66, 127, 38, 12, 187, 130, 221, 48, 164, 191, 157, 88, 168, 196, 10, 9, 53, 124, 150, 31, 116, 49, 34, 200, 134, 220, 121, 2, 62, 149, 158, 101, 17, 202, 11, 109, 85, 55, 67, 120, 43, 154, 44, 215, 177, 178, 40, 57, 14, 213, 151, 137]
22. Length 230
[69, 204, 215, 61, 97, 149, 9, 11, 137, 71, 37, 219, 92, 115, 156, 159, 200, 222, 3, 89, 172, 177, 203, 45, 54, 82, 147, 176, 168, 6, 26, 81, 25, 132, 212, 70, 228, 122, 225, 141, 100, 12, 124, 30, 146, 73, 19, 49, 52, 62, 217, 166, 191, 102, 163, 50, 181, 7, 134, 58, 76, 199, 179, 169, 197, 108, 174, 22, 186, 171, 114, 103, 173, 68, 65, 4, 13, 117, 64, 10, 126, 77, 206, 133, 121, 60, 40, 38, 59, 178, 224, 211, 187, 80, 220, 140, 8, 34, 130, 41, 95, 105, 227, 66, 210, 180, 192, 106, 209, 107, 157, 188, 170, 101, 131, 87, 14, 165, 78, 182, 136, 193, 190, 20, 67, 125, 36, 5, 145, 218, 99, 138, 154, 16, 29, 152, 194, 53, 148, 93, 202, 229, 198, 109, 43, 214, 150, 51, 128, 216, 1, 83, 196, 135, 74, 119, 75, 42, 142, 72, 226, 185, 116, 162, 63, 2, 112, 33, 184, 158, 15, 213, 144, 223, 98, 57, 160, 143, 90, 44, 205, 35, 21, 48, 151, 85, 123, 32, 47, 39, 189, 161, 56, 207, 84, 94, 230, 46, 164, 113, 175, 18, 195, 110, 127, 96, 129, 88, 17, 153, 104, 91, 86, 31, 118, 111, 120, 201, 28, 221, 23, 139, 24, 27, 167, 208, 183, 155, 79, 55]
23. Length 238
[202, 18, 122, 135, 11, 57, 103, 35, 86, 2, 84, 232, 208, 186, 54, 77, 145, 101, 105, 137, 210, 234, 207, 93, 55, 63, 230, 66, 160, 10, 223, 36, 34, 216, 104, 174, 121, 25, 166, 75, 167, 176, 61, 32, 118, 89, 68, 5, 14, 27, 204, 99, 149, 88, 91, 222, 37, 144, 108, 78, 128, 131, 190, 17, 65, 168, 225, 165, 41, 49, 38, 72, 43, 147, 158, 74, 130, 7, 82, 64, 97, 69, 100, 22, 152, 85, 48, 33, 218, 47, 228, 113, 40, 185, 219, 112, 180, 120, 4, 213, 179, 194, 51, 96, 221, 44, 238, 31, 117, 114, 229, 81, 164, 193, 236, 26, 59, 30, 151, 12, 115, 170, 24, 70, 227, 159, 133, 52, 134, 203, 15, 197, 155, 83, 50, 111, 195, 139, 109, 127, 188, 87, 62, 157, 226, 142, 98, 76, 211, 138, 58, 140, 198, 220, 16, 46, 183, 107, 106, 29, 163, 173, 209, 217, 215, 1, 177, 233, 199, 110, 172, 23, 212, 79, 94, 102, 39, 20, 178, 150, 175, 119, 8, 13, 42, 156, 201, 73, 200, 124, 53, 161, 92, 123, 224, 143, 196, 28, 9, 6, 80, 56, 148, 125, 214, 60, 171, 153, 231, 181, 205, 19, 95, 206, 154, 132, 169, 116, 3, 126, 187, 162, 191, 67, 136, 45, 192, 189, 235, 129, 21, 141, 237, 184, 90, 146, 182, 71]
24. Length 241
[2, 33, 49, 83, 207, 204, 13, 57, 115, 86, 102, 219, 232, 44, 177, 197, 171, 227, 191, 10, 25, 162, 62, 11, 76, 214, 163, 201, 130, 91, 233, 194, 112, 179, 66, 139, 183, 116, 196, 193, 150, 211, 30, 144, 209, 97, 174, 3, 68, 38, 120, 165, 56, 64, 87, 15, 79, 131, 206, 96, 188, 7, 99, 195, 129, 8, 186, 78, 212, 125, 161, 230, 225, 239, 47, 107, 53, 218, 164, 106, 198, 215, 181, 226, 6, 175, 167, 236, 67, 80, 210, 128, 155, 40, 63, 74, 113, 89, 18, 190, 124, 221, 59, 149, 103, 42, 156, 157, 200, 168, 34, 77, 65, 146, 5, 187, 222, 231, 140, 141, 172, 234, 100, 94, 132, 237, 24, 216, 152, 22, 51, 69, 35, 43, 105, 23, 61, 1, 72, 135, 104, 9, 12, 21, 46, 192, 159, 205, 158, 109, 28, 98, 50, 122, 111, 71, 166, 229, 37, 114, 173, 134, 136, 81, 121, 185, 118, 223, 20, 14, 108, 82, 178, 54, 26, 153, 36, 39, 117, 147, 95, 90, 16, 17, 170, 119, 199, 19, 84, 213, 88, 93, 151, 4, 101, 142, 110, 184, 55, 138, 75, 133, 148, 145, 45, 70, 217, 143, 224, 241, 31, 240, 182, 52, 238, 126, 85, 154, 137, 160, 27, 180, 60, 29, 32, 169, 235, 123, 176, 48, 220, 203, 228, 127, 41, 58, 73, 92, 189, 202, 208]
25. Length 241
[105, 160, 132, 32, 10, 117, 76, 2, 190, 108, 178, 51, 71, 237, 232, 47, 14, 124, 100, 31, 169, 196, 8, 184, 21, 151, 223, 86, 42, 127, 55, 58, 229, 4, 219, 46, 238, 179, 24, 194, 203, 122, 66, 15, 81, 146, 172, 106, 129, 135, 216, 120, 92, 231, 144, 195, 181, 162, 69, 45, 137, 136, 9, 30, 5, 188, 91, 49, 147, 233, 198, 17, 241, 163, 36, 18, 183, 59, 16, 29, 116, 182, 41, 48, 23, 39, 154, 210, 68, 167, 95, 213, 79, 225, 37, 157, 109, 143, 78, 142, 173, 155, 200, 110, 20, 73, 141, 168, 156, 126, 150, 201, 114, 1, 230, 211, 217, 131, 140, 204, 209, 149, 103, 199, 165, 175, 35, 107, 74, 63, 193, 239, 218, 234, 197, 224, 174, 121, 60, 88, 22, 171, 133, 207, 152, 34, 43, 228, 125, 115, 101, 7, 12, 220, 82, 153, 134, 52, 130, 70, 72, 44, 177, 89, 65, 98, 94, 53, 208, 227, 161, 3, 123, 236, 221, 87, 102, 50, 90, 180, 185, 186, 67, 77, 26, 212, 27, 222, 6, 145, 11, 13, 84, 25, 164, 64, 85, 139, 214, 189, 61, 96, 191, 128, 93, 138, 148, 19, 119, 202, 75, 176, 159, 56, 104, 206, 40, 187, 215, 62, 166, 240, 112, 226, 170, 83, 97, 57, 99, 38, 28, 113, 205, 158, 235, 111, 54, 192, 118, 80, 33]
26. Length 244
[89, 13, 154, 161, 235, 225, 92, 188, 215, 194, 54, 58, 128, 21, 165, 85, 144, 205, 142, 77, 109, 24, 83, 69, 72, 7, 224, 240, 191, 204, 183, 203, 68, 70, 63, 95, 206, 170, 153, 180, 45, 178, 35, 27, 190, 132, 222, 41, 40, 156, 97, 20, 217, 177, 167, 65, 23, 136, 216, 234, 38, 201, 236, 164, 82, 241, 10, 141, 148, 229, 5, 125, 113, 159, 193, 187, 130, 179, 52, 108, 86, 196, 174, 123, 56, 116, 227, 30, 239, 98, 186, 67, 135, 118, 163, 43, 32, 50, 231, 226, 232, 172, 200, 99, 6, 143, 39, 93, 107, 34, 129, 157, 100, 127, 15, 84, 81, 73, 121, 220, 44, 8, 57, 105, 91, 171, 162, 211, 244, 104, 112, 238, 212, 133, 71, 192, 145, 160, 87, 181, 60, 184, 119, 4, 55, 96, 53, 12, 213, 124, 94, 22, 42, 3, 48, 131, 117, 140, 138, 228, 219, 155, 59, 29, 202, 169, 114, 101, 47, 233, 176, 139, 207, 33, 79, 16, 51, 66, 75, 90, 198, 168, 166, 31, 151, 49, 208, 150, 111, 14, 25, 197, 17, 76, 80, 78, 9, 173, 26, 137, 19, 120, 199, 106, 152, 88, 147, 36, 158, 28, 243, 221, 110, 74, 175, 237, 61, 2, 62, 214, 189, 134, 195, 218, 18, 102, 46, 103, 11, 122, 146, 185, 182, 209, 1, 149, 115, 64, 37, 126, 230, 223, 242, 210]
27. Length 246
[28, 186, 214, 18, 220, 73, 20, 88, 234, 187, 27, 102, 22, 129, 10, 228, 196, 56, 47, 2, 16, 67, 124, 137, 177, 179, 223, 147, 188, 23, 103, 109, 149, 60, 229, 99, 222, 90, 49, 80, 158, 93, 171, 71, 175, 143, 19, 212, 40, 226, 219, 120, 146, 66, 167, 232, 94, 174, 237, 9, 173, 70, 122, 241, 58, 82, 191, 211, 180, 104, 53, 36, 83, 37, 131, 25, 162, 32, 210, 144, 145, 69, 135, 63, 154, 165, 46, 57, 50, 74, 128, 140, 112, 118, 125, 231, 221, 233, 95, 200, 153, 6, 166, 98, 208, 91, 89, 141, 4, 26, 134, 86, 8, 30, 157, 156, 224, 201, 243, 7, 161, 1, 84, 115, 44, 230, 78, 79, 5, 17, 194, 148, 152, 121, 193, 107, 240, 181, 29, 43, 65, 164, 45, 110, 64, 195, 216, 127, 59, 197, 178, 151, 139, 85, 75, 11, 204, 184, 77, 54, 51, 205, 108, 142, 130, 138, 238, 87, 38, 101, 96, 31, 215, 244, 242, 172, 213, 136, 97, 35, 39, 76, 42, 245, 123, 227, 24, 168, 33, 159, 217, 239, 55, 176, 68, 207, 106, 132, 15, 116, 61, 198, 62, 182, 225, 202, 105, 150, 183, 81, 170, 13, 41, 199, 3, 185, 235, 14, 155, 21, 126, 119, 169, 72, 12, 236, 48, 209, 190, 113, 218, 100, 52, 111, 189, 92, 192, 114, 117, 160, 133, 203, 163, 34, 206, 246]
28. Length 250
[119, 57, 59, 181, 212, 120, 236, 121, 99, 247, 138, 187, 175, 108, 107, 197, 123, 101, 141, 77, 201, 3, 52, 60, 56, 240, 157, 39, 42, 199, 23, 18, 136, 74, 137, 143, 229, 170, 20, 160, 206, 219, 191, 185, 46, 223, 150, 190, 116, 96, 198, 221, 220, 159, 238, 48, 176, 113, 168, 33, 44, 142, 67, 244, 13, 218, 122, 246, 214, 234, 237, 27, 165, 24, 153, 90, 84, 154, 235, 196, 80, 111, 102, 231, 228, 135, 16, 148, 26, 45, 10, 71, 156, 224, 183, 232, 72, 94, 132, 54, 58, 248, 144, 213, 139, 129, 245, 115, 25, 164, 87, 19, 193, 81, 32, 78, 91, 167, 171, 40, 92, 226, 109, 69, 86, 38, 61, 5, 14, 118, 145, 103, 53, 93, 172, 178, 225, 68, 163, 210, 179, 192, 208, 169, 17, 12, 50, 233, 6, 55, 243, 158, 88, 188, 242, 36, 173, 126, 155, 184, 216, 149, 47, 76, 200, 1, 112, 28, 161, 174, 41, 73, 222, 66, 37, 63, 64, 124, 89, 205, 9, 186, 202, 70, 203, 127, 105, 250, 182, 79, 43, 133, 8, 241, 114, 128, 51, 83, 98, 49, 209, 7, 95, 151, 162, 189, 180, 75, 195, 62, 207, 21, 104, 30, 117, 110, 140, 29, 227, 249, 82, 152, 11, 34, 85, 106, 217, 211, 2, 35, 215, 4, 230, 134, 31, 194, 97, 22, 125, 130, 100, 239, 131, 166, 65, 15, 146, 177, 204, 147]
29. Length 253
[46, 245, 174, 180, 85, 29, 141, 70, 252, 119, 214, 225, 86, 91, 41, 67, 219, 118, 127, 243, 2, 71, 157, 114, 55, 92, 5, 200, 199, 139, 191, 235, 153, 102, 206, 171, 117, 58, 223, 249, 11, 211, 202, 175, 156, 133, 57, 163, 47, 65, 213, 247, 189, 111, 177, 49, 124, 154, 164, 145, 80, 15, 232, 142, 39, 69, 201, 185, 229, 215, 170, 42, 3, 248, 169, 136, 149, 218, 237, 90, 135, 7, 242, 246, 23, 186, 31, 4, 167, 207, 173, 132, 195, 196, 78, 212, 22, 35, 194, 54, 184, 183, 222, 230, 88, 43, 144, 151, 34, 97, 6, 109, 37, 147, 72, 158, 134, 33, 51, 238, 165, 162, 9, 63, 166, 113, 137, 198, 50, 121, 106, 224, 19, 104, 95, 129, 193, 79, 192, 122, 30, 12, 234, 168, 76, 103, 73, 66, 188, 178, 172, 176, 250, 182, 110, 231, 155, 26, 197, 10, 152, 98, 131, 25, 36, 81, 138, 150, 227, 24, 112, 120, 204, 75, 8, 179, 94, 17, 140, 32, 77, 61, 233, 38, 205, 93, 99, 27, 208, 56, 216, 48, 241, 20, 130, 240, 115, 83, 60, 108, 28, 13, 89, 128, 160, 82, 40, 126, 16, 253, 21, 251, 228, 59, 159, 64, 203, 236, 52, 18, 181, 105, 107, 239, 220, 44, 74, 125, 209, 84, 226, 217, 210, 190, 101, 100, 68, 116, 161, 148, 244, 221, 96, 45, 123, 187, 62, 87, 53, 1, 146, 143, 14]
30. Length 256
[159, 248, 75, 43, 111, 38, 4, 17, 155, 87, 81, 208, 53, 230, 65, 11, 108, 228, 146, 212, 137, 225, 144, 189, 86, 105, 84, 128, 97, 50, 223, 15, 83, 169, 217, 47, 88, 236, 114, 181, 115, 177, 102, 250, 246, 104, 80, 45, 240, 14, 196, 52, 247, 41, 198, 32, 182, 206, 226, 101, 70, 94, 113, 49, 254, 59, 42, 154, 77, 253, 112, 215, 99, 25, 134, 92, 95, 150, 64, 178, 118, 79, 130, 63, 129, 131, 57, 218, 85, 204, 3, 163, 158, 186, 10, 199, 24, 125, 251, 51, 74, 160, 207, 120, 233, 30, 19, 9, 56, 167, 58, 117, 164, 54, 220, 229, 234, 203, 211, 103, 205, 69, 39, 5, 31, 191, 106, 180, 116, 245, 21, 222, 91, 235, 8, 2, 214, 29, 238, 176, 135, 61, 227, 202, 122, 252, 231, 89, 187, 37, 149, 96, 190, 172, 73, 18, 71, 1, 179, 46, 156, 201, 165, 256, 151, 27, 242, 188, 126, 124, 244, 100, 107, 143, 170, 72, 255, 40, 67, 192, 185, 219, 20, 157, 98, 237, 136, 168, 141, 224, 232, 44, 139, 132, 22, 60, 109, 90, 175, 171, 62, 23, 161, 12, 76, 210, 68, 184, 93, 243, 48, 209, 174, 200, 121, 123, 36, 173, 140, 133, 145, 6, 110, 152, 142, 241, 55, 138, 147, 193, 213, 127, 7, 34, 66, 153, 26, 13, 162, 183, 239, 78, 249, 221, 28, 194, 16, 35, 33, 82, 195, 148, 216, 119, 166, 197]

Python 3 (PyPy ile birlikte) - puan: 607771

Düzenleme: Hata düzeltildi, ancak bunu ispatlayana kadar bu işe ikna olmadım

def d(a, b, N):
    a, b = a%N, b%N

    if a >= b:
        return a-b
    else:
        return a+(N-b)

def gt(a, b, N):
    if a == N and b == 1:
        return False
    if a == 1 and b == N:
        return True
    return a > b

def solve(numbers):
    N = len(numbers)
    best_move = None
    target = sorted(numbers)

    if N == 2:
      return "" if numbers == [1,2] else "P"

    for b in range(N):
        nums = numbers[:]
        moves = []
        head_ptr = 0 # Which element should be at the start of the list if we actually moved stuff
        reference = target[b:]+target[:b]
        ref_d = {t:i for i,t in enumerate(reference)}

        while True:
            for pops in range(N):
                ptr = (head_ptr + pops) % N

                # Magic
                d1 = d(ref_d[nums[ptr-1]],ptr-1,N)+d(ptr,ref_d[nums[ptr]],N)
                d2 = d(ref_d[nums[ptr]],ptr,N)+d(ptr-1,ref_d[nums[ptr-1]],N)

                if d1 > d2 or (d1 == d2 and gt(nums[ptr-1], nums[ptr], N)):
                    moves.append("P"*pops + "S")
                    head_ptr = (head_ptr + pops) % N
                    nums[ptr-1],nums[ptr] = nums[ptr],nums[ptr-1]
                    break

            else:
                if nums[nums.index(1):]+nums[:nums.index(1)] != target:
                    print("This algorithm is seriously broken.\n")
                moves.append("P"*((N+nums.index(1)-head_ptr)%N))
                break

        moves = "".join(moves)

        if not best_move or len(moves) < len(best_move):
            best_move = moves

    return best_move

kullanım

solve([3, 4, 2, 1, 5])

açıklama

Program, şu gözlemleri kullanarak sadece kabarcık sıralama takaslarını gerçekleştirir:
S: n 1 2 3 ... n-1 0 PS: 0 2 3 ... n-1 n 1 PPS: 1 3 ... n-1 n 0 2 PPPS: 2 ... n-1 n 0 1 3 ...

Başka bir deyişle, ibir takasın ardından gelen iitmeler, elemanın i-1, elemanların , endekslerin sarılması ile değiştirildiği anlamına gelir . Ancak, listenin böyle değiştirilip değiştirilmediğini takip etmemiz gerekir.

Alışılagelmiş baloncuk sıralamalarından daha iyisini yapmak için, çok fazla işe yaramaz takas yapmamak için bir buluşsal yöntem kullanmaya çalışırız, herhangi bir takasın her iki öğeyi de kendi hedeflerine yaklaştırmasını sağlayın (Resmen kanıtlamadım) bu doğru, ama şimdiye kadar çalışıyor gibi görünüyor) Daha sonra birçok yapılandırmadan en iyi çözümü alıyoruz (CPython biraz zaman alıyor ancak PyPy bu işi nispeten hızlı bir şekilde yapıyor).

puanlama

Pastebin'den çıktı.

Önceki saf kabarcık sıralaması ver. (puan: 1126232)

Bu kesinlikle işe yarıyor.

def cyclic_sorted(nums):
    for i in range(len(nums)):
        if nums[i:] + nums[:i] == sorted(nums):
            return i
    return False

def solve(nums):
    N = len(nums)

    def gt(a, b):
        if a == 1 and b == N:
            return True
        if a == N and b == 1:
            return False
        return a > b

    moves = []
    head_ptr = 0 # Which element should be at the start of the list if we actually moved stuff

    while nums != sorted(nums):
        pops = 0
        ptr_offset = 0

        while pops < N:
            ptr = (head_ptr + pops) % N

            if (not moves or pops > 0) and gt(nums[ptr-1], nums[ptr]):
                moves.append("P"*pops + "S")
                head_ptr = (head_ptr + pops) % N

                nums[ptr-1],nums[ptr] = nums[ptr],nums[ptr-1]
                break

            pops += 1

        else:
            moves.append("P"*cyclic_sorted(nums[head_ptr:]+nums[:head_ptr]))
            break

    return "".join(moves)

Javascript ES6 - 607.771

function popsort( iData ) {
    var sSP, iLen,
        sSP_Opt = popsortimpl( iData.slice( 0 ), 0 ),
        iOptLen = sSP_Opt.length;

    for( var n = iData.length, i = 2; i <= n; i++ )
        if( (iLen = (sSP = popsortimpl( iData.slice( 0 ), i - 1 )).length) < iOptLen ) {
            iOptLen = iLen;
            sSP_Opt = sSP;
        }

    return sSP_Opt;
}

function popsortimpl( iData, iPivIdx ) {
    function issorted()
        { return iData.every( (_,i_) => _ == i_+1 ); }

    function swap() {
        var i_ = iData[0];

        iData[0] = iData[n-1];
        iData[n-1] = i_;

        sSP.push( 'S' );
    }

    function pop() {
        iData.push( iData.shift() );
        if( --iPivIdx < 0 )
            iPivIdx += n;

        sSP.push( 'P' );
    }

    function dist2home( iIdx_, i_ ) {
        var iHome_ = (iPivIdx + i_) %n,
            iDist1_ = iIdx_ - iHome_,
            iDist2_ = iHome_ - iIdx_;

        if( iDist1_ < 0 )
            iDist1_ += n;
        if( iDist2_ < 0 )
            iDist2_ += n;

        return Math.min( iDist1_, iDist2_*Math.max( 1, n/50 ) );
    }

    var n = iData.length,
        sSP = [];

    while( !issorted() ) {
        var iDistP = Math.max( dist2home( 0, iData[0] ), dist2home( n - 1, iData[n - 1] ) ),
            iDistS = Math.max( dist2home( n - 1, iData[0] ), dist2home( 0, iData[n - 1] ) );

        if( iDistS < iDistP )
            swap();
        else pop();
    }
    return sSP.join('');
}

Referans konumuna en kısa rotaya bağlı olarak (yukarı kabarcık veya aşağı kabarcık) elemanları yukarı ya da aşağı kabartan "en yakın" bir kabarcık düzeni uygular.

Rutinin optimal olduğuna inanmıyorum, ancak makul derecede yakın olması gerekiyor. Bonus olarak, test vektörlerinin tamamını milisaniye cinsinden çalıştırır.

Rekabetçiliği artırmak için pivot noktası üzerinde yineleme yapmak üzere güncellendi . Ayrıca elemanların listeyi "aşağı" hareket ettirmekten ziyade listeyi "yukarı" hareket ettirmekten daha düşük bir hareketliliğe sahip olduğunu (yarı iletkende elektron ve delik hareketliliğindeki farka benzer bir fenomen) olduğu için telafi etmek için sezgisel olarak tanıttım. Bu uygulama ile Sp3000'ler arasında büyük farklar var, bu nedenle her iki puanın da tam olarak 607.771 olduğu ürkütücü. Cadılar Bayramı ürkütücü.

Rutinin çalışması yaklaşık 20 saniye sürüyor.

Örnek çıktı

popsort( [2, 7, 5, 3, 4, 6, 1] )

verim

PSPPSPSPPPS

OCaml, skor: 1136707 1136599

Düzenleme: Ben berbat! Okuduğum Sbitişik elemanları takas olur ve bu cevapsız ilk ve son elemanları değiştirilecek. Bu uygulama, evaluygulamada açık olduğu gibi, bunun üzerine kuruludur . Düzenleme²: SP olarak düşündüğüm şeyi P S olarak yazabileceğinizi gözlemleyerek düzelttim. Ayrıca daha az yavaşlatmak için bazı optimizasyonlarla daha iyi puanlama sürümüne geçtim.

Çalışma zamanı, tercüman derlenmiş ikili kod kullanarak sistemimde 1.33 18 1.01 saniyedir .

type sp = S | P

let string_of_sp = function
  | S -> "S"
  | P -> "P"

let rec eval (e : sp list) (xs : int list) : int list =
  match e, xs with
  | [], xs -> xs
  | P :: S :: e, x1 :: x2 :: xs -> eval e (x1 :: xs @ [x2])
  | P :: e, x :: xs -> eval e (xs @ [x])
  | _ -> assert false

let generate_sp_sequence xs : sp list =
  let sorted = List.sort compare xs in
  let rec generate_sp_sequence ((xs, ys) : int list * int list) acc : sp list =
    if sorted = ys @ List.rev xs
    then acc
    else 
      match ys with
      | v1 :: v2 :: ys' ->
         if v1 > v2
         then generate_sp_sequence (v2 :: xs, v1 :: ys') (S :: P :: acc)
         else generate_sp_sequence (v1 :: xs, v2 :: ys') (P :: acc)
      | [x] ->
         let ys = List.rev (x :: xs) in
         generate_sp_sequence ([], ys) (P :: acc)
      | [] ->
         assert false
  in List.rev @@ generate_sp_sequence ([], xs) []


(** Uncomment to run tests **)
(*
let test =
  QCheck.(mk_test
            ~n:1000
            ~name:"generate_sp_sequence sorting test"
            ~pp:PP.(list int)
            Arbitrary.(list ~start:2 ~stop:256 small_int)
            (fun xs ->
             Prop.assume (List.length xs >= 2);
             eval (generate_sp_sequence ([], xs))
                  xs
             = List.sort compare xs))

let _ = QCheck.run test
 *)

let score_test = ... (* not included for brevity *)

let score =
  List.map (fun xs -> generate_sp_sequence ([], xs)) score_test
  |> List.map List.length
  |> List.fold_left (+) 0

let _ =
  print_string "The score is: ";
  print_int score;
  print_newline ()

generate_sp_sequence sadece bubblesortu çalıştırır ve S ve P cinsinden basamakları çıkarır. Gereksiz adımlara neden olabilir.

C, puan: 607771

Benim çözümüm Sp3000'in Python çözümüne çok benziyor (aynı puanı açıklıyor). Python'u hiç kullanmadım, bu yüzden kesin olarak söyleyemem, ancak konseptin tamamen aynı olduğunu düşünüyorum:

0.n-1'deki her bir sayı için, başlangıç ​​pozisyonundan r kere döndürülmüş bir dizinin dizisini (yani r = P mod n ile P açılır) içerir ve bu konfigürasyonda sonuçlanan bir dizi hareketi bulun. Herhangi bir r için en kısa hamle sırasını kaydedin.
Takas işlemlerini yalnızca takas, hangi elemanın hedef konumundan daha uzak olduğuna yaklaşırsa (her iki yöne bakıldığında) veya takas, her ikisi de eşit derecede uzaktaysa her iki elemanı daha da yaklaştığında gerçekleştirir.

kod

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

/* Returns true if the array is sorted starting at position 'offset' */
int is_sorted(int *array, int n, int offset)
{
    int i;
    for (i = 0; i < n && array[(offset+i)%n] == i+1; i++);
    return i == n;
}

/* Find moves that would sort the array, assuming the first element will
   be at position (offset + n/2) % n */
int get_moves(int *array, int n, int offset, int stop_after, char *moves)
{
    int tmp, posA = n-1, posB = 0, counter = 0;
    /* Repeat until sorted or reaching the maximum number of moves (previous
       best, or the worst case upper bound if no previous solution) */
    for (; counter < stop_after && !is_sorted(array, n, posB); posA = (posA+1)%n, posB = (posB+1)%n, moves[counter++] = 'P')
    {
        /* Perform a swap if it would move whichever element is further away
           closer to its target */
        if ((array[posA] - posA + offset + n) % n >
            (array[posB] - posB + offset + n) % n)
        {
            tmp = array[posA];
            array[posA] = array[posB];
            array[posB] = tmp;
            moves[counter++] = 'S';
            if (is_sorted(array, n, posB))
            {
                break;
            }
        }
    }
    return counter;
}

int *parse_input(int _argc, char **_argv)
{
    int i;
    int *array = NULL;
    if (_argc > 1)
    {
        array = malloc((_argc-1) * sizeof(int));
        _argv[1]++; /* remove initial square bracket */
        for (i = 1; i < _argc; i++)
        {
            array[i-1] = atoi(_argv[i]);
        }
    }
    return array;
}

int main(int _argc, char **_argv)
{
    int *orig_array = parse_input(_argc, _argv);
    if (orig_array != NULL)
    {
        int n = _argc - 1;
        /* Safe worst case upper bound representing n^2 "SP" moves */
        int worst_move_count = 2*n*n;

        int i, move_count, offset;
        int best_offset, best_move_count = worst_move_count;

        char *best_moves = malloc(worst_move_count + 1);
        char *moves = malloc(worst_move_count + 1);
        int *array = malloc(n * sizeof(int));

        memset(best_moves, 0, worst_move_count + 1);
        /* Try all offsets from 0 to n-1; i.e. find solutions for:
           1, 2, 3, ..., n-2, n-1, n
           2, 3, 4, ..., n-1, n,   1
           3, 4, 5, ..., n,   1,   2
           ...
           n, 1, 2, ..., n-3, n-2, n-1
        */
        for (offset = 0; offset < n; offset++)
        {
            memset(moves, 0, worst_move_count + 1);
            memcpy(array, orig_array, n*sizeof(int));
            move_count = get_moves(array, n, offset, best_move_count, moves);
            if (move_count < best_move_count)
            {
                strcpy(best_moves, moves);
                best_move_count = move_count;
                best_offset = offset;
            }
        }
        printf("%s\n", best_moves);

        free(best_moves);
        free(moves);
        free(array);
        free(orig_array);
    }
    return 0;
}

kullanım

$ gcc -Ofast -o popswap popswap.c
$ ./popswap [2, 7, 5, 3, 4, 6, 1]
PSPPSPSPPPS
$ ./popswap [2, 7, 5, 3, 4, 6, 1]|tr -d '\n'|wc -c
11

puanlama

Senaryo:

#!/bin/sh
grep ^\\[ input.txt|while read line; do
    len=`echo $line|wc -w`;
    score=`./popswap $line|tr -d '\n'|wc -c`;
    echo "    $len $score";
done

Sonuçlar:

$ ./scoring.sh |cut -d' ' -f 6|paste -sd+|bc
607771
$ time ./scoring.sh > /dev/null

real    0m1.926s
user    0m1.879s
sys     0m0.122s
$ ./scoring.sh
3 2
7 11
41 893
52 1546
65 2543
69 2686
75 3391
80 3728
103 6483
108 0
109 7103
151 14371
173 18663
177 19728
192 22824
201 24828
201 24752
205 25573
211 27509
226 32221
227 31928
230 33630
238 34603
241 36676
241 36505
244 37759
246 38106
250 38264
253 40040
256 41405

C ++ 11, skor: 1122052

Giriş sırasındaki boşlukları hesaba katmayan, ancak sıradaki minimum değeri hesaba katan çok naif uygulama.

Argüman listesi sadece sayı dizisidir, virgül ve parantez olmadan (örneğin: "./a.out 2 7 5")

#include <iostream>
#include <cstring>
#include <string>
using namespace std;

int* input  = 0;
int s_count = 0;
int p_count = 0;
int len;
int last;

void do_swap()
{
  int a = input[0];
  input[0] = input[last];
  input[last] = a;
  s_count++;
  cerr << "S";
}

void do_pop()
{
  int a = input[0];
  memmove(&input[0], &input[1], sizeof(int) * last);
  input[last] = a;
  p_count++;
  cerr << "P";
}

bool is_sorted()
{
  int i = 0;
  while (input[i] < input[i+1]) { if (++i == last) return true; }
  return false;
}

int main(int argc, char** args)
{
  int min_val = 256;

  len = argc - 1;
  last = len - 1;
  if (len <= 1)
    return 1;

  input = new int[len];
  for (int i = 2; i <= argc; i++)
  {
    int j = stoi(args[i-1]);
    input[i-2] = j;
    min_val = min(min_val, j);
  }

  while (!is_sorted())
  {
    if ((input[0]) == min_val)
      do_pop();
    else if (input[0] < input[last])
      do_swap();
    else if (input[0] > input[last])
      do_pop();
  }

  cerr << endl;
  cout << len << " " << (s_count + p_count) << endl;
  delete [] input;
  return 0;
}

puanlama

3 2
7 19
41 1642
52 3236
65 4787
69 4966
75 6644
80 6090
103 12142
108 0
109 13774
151 24976
173 34061
177 37835
192 41994
201 48316
201 47276
205 49439
211 51551
226 58859
227 56824
230 58994
238 64227
241 65774
241 66287
244 71345
246 73426
250 71766
253 68629
256 77171