42Tokyo-push_swap

Transcript

1. PUSH_SWAP
   PUSH_SWAP
   

   View Slide

2. View Slide

3. (ID:terabu : )
   Piscine:2022-08 / :2022-10
   5
   

   View Slide

4. View Slide

5. 1.
   2.
   3.
   push_swap ( )
   

   View Slide

6. View Slide

7. 1.
   2.
   3.
   →
   

   View Slide

8. created by nafuka
   push_swap
   

   View Slide

9. View Slide

10. View Slide

11. View Slide

12. 1.
    2.
    3.
    4.
    

    View Slide

13. View Slide

14. 6
    1 2 3 -> x ( )
    1 3 2 -> 2 1 3 ( rra ) -> 1 2 3 ( sa )
    2 1 3 -> 1 2 3 ( sa )
    2 3 1 -> 1 2 3 ( rra )
    3 1 2 -> 1 2 3 ( ra )
    3 2 1 -> 2 1 3 ( ra ) -> 1 2 3 ( sa )
    

    View Slide

15. View Slide

16. View Slide

17. View Slide

18. View Slide

19. View Slide

20. ( )
    

    View Slide

21. created by terabu
    push_swap
    

    View Slide

22. ( )
    (push_swap )
    

    View Slide

23. View Slide

24. View Slide

25. View Slide

26. View Slide

27. View Slide

28. ↓
    8, 100, 33, 12, 6, 1211
    1, 4, 3, 2, 0, 5
    

    View Slide

29. View Slide

30. ( )
    

    View Slide

31. →
    

    View Slide

32. View Slide

33. 0, 1
    1 a 2
    int 2147483648 -2147483649
    1 2 3
    3 2 2 1
    etc...
    

    View Slide

34. View Slide

35. push_swap
    

    View Slide

36. View Slide

37. View Slide

38. push_swap ( )
    

    View Slide

39. View Slide

40. push_swap
    ( )
    

    View Slide

41. View Slide

42. View Slide

43. View Slide

44. View Slide

45. View Slide

46. 1.
    2.
    3.
    4.
    5.
    

    View Slide

47. View Slide

48. B → A
    B → A
    A → B
    YES
    NO
    YES
    NO
    A → B
    ( )
    

    View Slide

49. View Slide

50. B
    B
    

    View Slide

51. A B
    10
    16
    17
    14
    13
    12
    15
    18
    11
    5
    3
    6
    2
    9
    7
    4
    1
    8
    8
    10
    16
    1
    17
    4
    7
    14
    9
    13
    2
    12
    6
    15
    18
    11
    3
    5
    A B A B
    pb
    ra
    ra
    pb
    ra
    pb
    rb
    rb
    pa
    rb
    pa
    pa
    

    View Slide

52. A B A B
    8
    7
    9
    6
    10
    |
    18
    5
    3
    2
    4
    1
    4
    5
    8
    7
    9
    6
    10
    |
    18
    1
    3
    2
    A B
    4
    5
    8
    7
    9
    6
    10
    |
    18
    1
    2
    3
    A B
    4
    5
    8
    7
    9
    6
    10
    |
    18
    1
    2
    3
    pa
    rb
    rb
    pa
    rra
    sa
    pa
    ra
    pa
    ra
    pa
    ra
    

    View Slide

53. A B A B
    8
    7
    9
    6
    10
    |
    18
    1-3
    5
    4
    8
    7
    9
    6
    10
    |
    18
    1-3
    4
    5
    A B
    8
    7
    9
    6
    10
    |
    18
    1-3
    4
    5
    

    View Slide

54. A B A B A B
    10
    |
    18
    1
    |
    5
    6
    9
    7
    8
    8
    9
    10
    |
    18
    1
    |
    5
    6
    7
    8
    9
    10
    |
    18
    1
    |
    5
    6
    7
    

    View Slide

55. A B A B
    10-18
    10
    |
    18
    1
    |
    7
    9
    8
    10
    |
    18
    1
    |
    7
    8
    9
    A B
    10
    |
    18
    1
    |
    7
    8
    9
    

    View Slide

56. View Slide

57. A B
    10 - 18
    8 - 9
    6 - 7
    4 - 5
    1 - 3
    A B
    8 - 9
    6 - 7
    10 - 18
    4 - 5
    1 - 3
    A B
    4 - 5
    8 - 9
    6 - 7
    10 - 18 1 - 3
    A B
    4 - 5
    8 - 9
    6 - 7
    10 - 18
    1 - 3
    A B
    8 - 9
    5 - 7
    10 - 18 4 - 5
    A B
    8 - 9
    6 - 7
    10 - 18
    1 - 3
    4 - 5
    A B
    10 - 18
    1 - 5
    8 - 9
    6 - 7
    A B
    8 - 9
    10 - 18
    1 - 5 6 - 7
    A B
    8 - 9
    10 - 18
    1 - 5
    6 - 7
    A B
    10 - 18
    1 - 7 8 - 9
    A B
    10 - 18
    1 - 7
    8 - 9
    A B
    1 - 9 10 - 18
    B
    4 →A
    B → A
    A
    B → A
    A
    B
    2 →A
    B
    →A
    1
    → B
    A → B
    2
    4 → B
    1
    2 → B
    B
    2 →A
    B
    →A
    B
    →A
    B
    →A
    

    View Slide

58. View Slide

59. A → B
    ↓
    A push
    

    View Slide

60. 16 → 8 → 4 → 2
    2 → 4 → 8 → 16
    4 8 16
    

    View Slide

61. 1.
    2.
    

    View Slide

62. View Slide

63. View Slide

64. View Slide

65. View Slide

66. View Slide

67. int func(int N)
    {
    int A;
    if (N == 1)
    return (1);
    A = func(N - 1) * N; //
    printf("%d\n", N);
    return (A);
    }
    

    View Slide

68. printf
    func ( 5 ) = func ( 4 ) x 5
    func ( 4 ) = func ( 3 ) x 4
    func ( 3 ) = func ( 2 ) x 3
    func ( 2 ) = func ( 1 ) x 2
    func ( 1 ) = 1
    1
    2
    6
    24
    120
    printf
    2
    3
    4
    5
    

    View Slide

69. A push
    

    View Slide

70. View Slide

71. B → A( ) A → B( )
    1
    

    View Slide

72. A B
    10 - 18
    8 - 9
    6 - 7
    4 - 5
    1 - 3
    A B
    8 - 9
    6 - 7
    10 - 18
    4 - 5
    1 - 3
    A B
    4 - 5
    8 - 9
    6 - 7
    10 - 18 1 - 3
    A B
    4 - 5
    8 - 9
    6 - 7
    10 - 18
    1 - 3
    A B
    8 - 9
    5 - 7
    10 - 18 4 - 5
    A B
    8 - 9
    6 - 7
    10 - 18
    1 - 3
    4 - 5
    A B
    10 - 18
    1 - 5
    8 - 9
    6 - 7
    A B
    8 - 9
    10 - 18
    1 - 5 6 - 7
    A B
    8 - 9
    10 - 18
    1 - 5
    6 - 7
    A B
    10 - 18
    1 - 7 8 - 9
    A B
    10 - 18
    1 - 7
    8 - 9
    A B
    1 - 9 10 - 18
    B
    4 →A
    B → A
    A
    B → A
    A
    B
    2 →A
    B
    →A
    1
    → B
    A → B
    2
    4 → B
    1
    2 → B
    B
    2 →A
    B
    →A
    B
    →A
    B
    →A
    

    View Slide

73. View Slide

74. A = 4
    B → A
    A → B
    A = 2
    B → A
    A → B
    A = 2
    B → A
    A → B
    B → A B → A B → A B → A
    A A push
    B B
    B = 5
    B = 3 B = 2
    B = 4
    B = 2 B = 2
    B = 9
    

    View Slide

75. View Slide

76. →
    

    View Slide

77. View Slide

78. View Slide

79. ...
    

    View Slide

80. View Slide