Statistics

Problem Statement for "CardsShuffle"

Problem Statement

You are given a String cards, which represents a sequence of cards. Shuffle the cards by repeatedly performing the specified exchange operation. The exchange operation is specified by the ints first and last, which are both 1-based indices in the sequence. Take all the cards between the first-th card and the last-th card, inclusive, and move them to the beginning of the sequence. Do not change the relative order of the moved cards. For example, if first = 2 and last = 4, an exchange operation on "ABCDEFG" would produce "BCDAEFG".

Perform the specified exchange operation times times on the given sequence and return a String containing the resulting sequence.

Definition

Class:
CardsShuffle
Method:
shuffle
Parameters:
String, int, int, int
Returns:
String
Method signature:
String shuffle(String cards, int first, int last, int times)
(be sure your method is public)

Constraints

  • cards will contain between 1 and 50 characters, inclusive.
  • cards will contain only uppercase letters ('A'-'Z').
  • first will be between 1 and n, inclusive, where n is the number of characters in cards.
  • last will be between first and n, inclusive, where n is the number of characters in cards.
  • times will be between 1 and 100, inclusive.

Examples

  1. "NW"

    2

    2

    9

    Returns: "WN"

    It always moves the second card to the front.

  2. "BMQ"

    1

    2

    2

    Returns: "BMQ"

    This operation does not change anything.

  3. "DARZ"

    1

    3

    5

    Returns: "DARZ"

  4. "KYHID"

    3

    5

    8

    Returns: "YHIDK"

  5. "CDXRJM"

    1

    1

    36

    Returns: "CDXRJM"

  6. "RXSJYBL"

    1

    6

    60

    Returns: "RXSJYBL"

  7. "FSARCBYN"

    5

    5

    74

    Returns: "SARCFBYN"

  8. "YGGXXPKLO"

    8

    9

    63

    Returns: "YGGXXPKLO"

    cards may contain duplicate characters.

  9. "KMCOQHNWNKU"

    9

    10

    9

    Returns: "COQHNWNKKMU"

  10. "WMDKQTBXIXMVT"

    5

    5

    79

    Returns: "MDKQWTBXIXMVT"

  11. "LJPTNSNFWZQFJM"

    1

    4

    11

    Returns: "LJPTNSNFWZQFJM"

  12. "DRRWSOFSBCNUVQH"

    2

    6

    23

    Returns: "ODRRWSFSBCNUVQH"

  13. "SAQXWPQCACEHCHZV"

    4

    14

    76

    Returns: "WPQCACEHCHSAQXZV"

  14. "MLNOZJKPQPXRJXKIT"

    3

    15

    78

    Returns: "KPQPXRJXKMLNOZJIT"

  15. "ACBHHKICQCOENDTOMF"

    7

    12

    48

    Returns: "ACBHHKICQCOENDTOMF"

  16. "DWFCGPXIQVKUYTDLCGD"

    3

    4

    34

    Returns: "DWFCGPXIQVKUYTDLCGD"

  17. "TACIOHORDTQKVWCSGSPQ"

    3

    17

    18

    Returns: "CIOHORDTQKVWCSGTASPQ"

  18. "SBOAGUWNNYQXNZLGDGWPB"

    6

    6

    50

    Returns: "GUSBOAWNNYQXNZLGDGWPB"

  19. "BLNSADEUGUUMOQCDRUBETO"

    7

    13

    38

    Returns: "UGUUMOBLNSADEQCDRUBETO"

  20. "HOACHWDVMXXRDRYXLMNDQTU"

    18

    23

    32

    Returns: "XLMNDQTUHOACHWDVMXXRDRY"

  21. "GMLEJUUKWCIBXUBUMENMEYAT"

    4

    22

    37

    Returns: "MLEJUUKWCIBXUBUMENMEYGAT"

  22. "YDIAJXLOGHIQFMZHLVIHJOUVS"

    3

    3

    11

    Returns: "DIYAJXLOGHIQFMZHLVIHJOUVS"

  23. "YPAYULYEIMUOTEHZRIICFSKPGG"

    2

    11

    76

    Returns: "UYPAYULYEIMOTEHZRIICFSKPGG"

  24. "IPZZRZUCXAMLUDFYKGRUOWZGIOO"

    1

    9

    65

    Returns: "IPZZRZUCXAMLUDFYKGRUOWZGIOO"

  25. "PLEQLWPHAPJNADQHDCNVWDTXJBMY"

    18

    20

    12

    Returns: "LWPHAPJNADQHDCNVPLEQWDTXJBMY"

  26. "HAUXNSPUSGDHIIXQMBFJXJCVUDJSU"

    9

    28

    71

    Returns: "SGDHIIXQMBFJXJCVUDJSHAUXNSPUU"

  27. "YEBMWSIQYOYGYXYMZEVYPZVJEGEBEO"

    10

    13

    24

    Returns: "YOYGYYEBMWSIQXYMZEVYPZVJEGEBEO"

  28. "FTSXDIXTIGSIEEHKCHZDFLILRJQFNXZ"

    18

    22

    93

    Returns: "DFLFTSXDIXTIGSIEEHKCHZILRJQFNXZ"

  29. "SVBSPKYHSENBPPKQTPDDBUOTBBQCWIVR"

    2

    12

    27

    Returns: "SPKYHSENBSVBPPKQTPDDBUOTBBQCWIVR"

  30. "UJJDDNTGEIQVDGAIJVWCYAUBWEWPJVYGE"

    1

    27

    60

    Returns: "UJJDDNTGEIQVDGAIJVWCYAUBWEWPJVYGE"

  31. "XEPBPIWUQZDZUBDUBZVAFSPQPQWUZIFWOV"

    17

    18

    90

    Returns: "XEPBPIWUQZDZUBDUBZVAFSPQPQWUZIFWOV"

  32. "WYVVBURCZMGYJGFDXVTNUNNESLSPLWUIUPF"

    4

    11

    56

    Returns: "VBURCZMGWYVYJGFDXVTNUNNESLSPLWUIUPF"

  33. "BKNHKWPPANLTCFIRJCDDSOZOYVEGURFWCSFM"

    4

    29

    77

    Returns: "UBKNHKWPPANLTCFIRJCDDSOZOYVEGRFWCSFM"

  34. "QMRJOWRGHWLKOBMEAHKGCCNAEHHSVEYMQPXHL"

    18

    35

    59

    Returns: "AEHHSVEYMQPXQMRJOWRGHWLKOBMEAHKGCCNHL"

  35. "NYFDZRHBASJEUYGAFOUBUTPNIMUWFJQSJXVKQD"

    30

    31

    18

    Returns: "UWFJQNYFDZRHBASJEUYGAFOUBUTPNIMSJXVKQD"

  36. "XVRWCTDSNEOGVBPKXLPGDIRBFCRIQIFPGYNKRRE"

    11

    19

    29

    Returns: "TDSNEOGVBPKXLPXVRWCGDIRBFCRIQIFPGYNKRRE"

  37. "NVUCFTPWCTGTWMXNUPYCFGCUQUNUBLMOIITNCKLE"

    9

    36

    77

    Returns: "FTPWCTGTWMXNUPYCFGCUQUNUBLMOIITNNVUCCKLE"

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