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Problem Statement for "PalindromeMaker"

Problem Statement

A palindrome is a string that is spelled the same forward and backward. We want to rearrange letters of the given string baseString so that it becomes a palindrome.

You will be given a String baseString. Return the palindrome that can be made from baseString. When more than one palindrome can be made, return the lexicographically earliest (i.e., the one that occurs first in alphabetical order). Return "" (the empty string) if no palindromes can be made from baseString.

Definition

Class:
PalindromeMaker
Method:
make
Parameters:
String
Returns:
String
Method signature:
String make(String baseString)
(be sure your method is public)

Constraints

  • baseString will contain between 1 and 50 characters, inclusive.
  • Each character in baseString will be an uppercase letter ('A'-'Z').

Examples

  1. "AABB"

    Returns: "ABBA"

  2. "AAABB"

    Returns: "ABABA"

  3. "ABACABA"

    Returns: "AABCBAA"

  4. "ABCD"

    Returns: ""

  5. "ZYXWVUTSRQPONMLKJIHGFEDCBA"

    Returns: ""

  6. "ZYXWVUTSRQPONMLKJIHGFEDCBZYXWVUTSRQPONMLKJIHGFEDCB"

    Returns: "BCDEFGHIJKLMNOPQRSTUVWXYZZYXWVUTSRQPONMLKJIHGFEDCB"

  7. "ZYXWVUTSRQPONMLKJIHGFEDCBZYXWVUTSRQPONMLKJIHGFEDCA"

    Returns: ""

  8. "ZYXWVUTSRQPONMLKJIHGFEDCBZYXWVUTSRQPONMLKJIHGFEDC"

    Returns: "CDEFGHIJKLMNOPQRSTUVWXYZBZYXWVUTSRQPONMLKJIHGFEDC"

  9. "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"

    Returns: "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"

  10. "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"

    Returns: "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"

  11. "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABBAAAAAAAAAAAAAA"

    Returns: "AAAAAAAAAAAAAAAAAAAAAAABABAAAAAAAAAAAAAAAAAAAAAAA"

  12. "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABBAAAAAAAAAAAAAAB"

    Returns: ""

  13. "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABBAAAAAAAAAAAAAB"

    Returns: "AAAAAAAAAAAAAAAAAAAAAAABBBAAAAAAAAAAAAAAAAAAAAAAA"

  14. "ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZBBZZZZZZZZZZZZZB"

    Returns: "BZZZZZZZZZZZZZZZZZZZZZZZBZZZZZZZZZZZZZZZZZZZZZZZB"

  15. "ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZBBZZZZZZZZZZZZZZ"

    Returns: "BZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZB"

  16. "A"

    Returns: "A"

  17. "Z"

    Returns: "Z"

  18. "FZ"

    Returns: ""

  19. "GG"

    Returns: "GG"

  20. "ZZA"

    Returns: "ZAZ"

  21. "DDZ"

    Returns: "DZD"

  22. "DZG"

    Returns: ""

  23. "DDDFFF"

    Returns: ""

  24. "DDDFFFF"

    Returns: "DFFDFFD"

  25. "DDTTFFF"

    Returns: "DFTFTFD"

  26. "CFD"

    Returns: ""

  27. "ZA"

    Returns: ""

  28. "MJVKGDCGNFKDCONOHYMUCGDSHSVFLYLDJCGU"

    Returns: "CCDDFGGHJKLMNOSUVYYVUSONMLKJHGGFDDCC"

  29. "GPDSUDGVSOFOWFCUFCPGFWVG"

    Returns: "CDFFGGOPSUVWWVUSPOGGFFDC"

  30. "UWDNOPQQMPUPDQRPOGMHUHXNHUWWWTXDGQHXRTD"

    Returns: "DDGHHMNOPPQQRTUUWWXXXWWUUTRQQPPONMHHGDD"

  31. "HLHPHLFHAUIAXEFEWUWYYXI"

    Returns: "AEFHHILUWXYPYXWULIHHFEA"

  32. "UQUUUJKECKUUUNWIIMVESNJVUWMGGCS"

    Returns: "CEGIJKMNSUUUUVWQWVUUUUSNMKJIGEC"

  33. "KNPATKQQPITNDRGIKEIVWQNEPKDORSAWQAAVSINOPG"

    Returns: "AADEGIIKKNNOPPQQRSTVWWVTSRQQPPONNKKIIGEDAA"

  34. "DFFD"

    Returns: "DFFD"

  35. "NQTNNVCTTDQCPPDNT"

    Returns: "CDNNPQTTVTTQPNNDC"

  36. "WRRICNTEZWGEBXOZJRTDZGIDBGEZUGXIWOOICONWUUIEJUIR"

    Returns: "BCDEEGGIIIJNOORRTUUWWXZZZZXWWUUTRROONJIIIGGEEDCB"

  37. "SS"

    Returns: "SS"

  38. "GXHUIYPYYOXKVCUEHIKEODODVGHWPOWDCAYODPOPHA"

    Returns: "ACDDEGHHIKOOOPPUVWXYYYYXWVUPPOOOKIHHGEDDCA"

  39. "HNURVSHNGIBIHKIGRMVFUMNNSHIBKCF"

    Returns: "BFGHHIIKMNNRSUVCVUSRNNMKIIHHGFB"

  40. "HMLRGGGMFDVTVYLBGQQHDBFSRTSRGYURGGG"

    Returns: "BDFGGGGHLMQRRSTVYUYVTSRRQMLHGGGGFDB"

  41. "ZGGYUCGPGSSLYAZPQQATJCULT"

    Returns: "ACGGLPQSTUYZJZYUTSQPLGGCA"

  42. "HROORXUUUPUXMPUKXHXXUXKM"

    Returns: "HKMOPRUUUXXXXXXUUURPOMKH"

  43. "AMFBRSXHXXRKPAMRTXGJPUBGHSFRUJTFTTF"

    Returns: "ABFFGHJMPRRSTTUXXKXXUTTSRRPMJHGFFBA"

  44. "USDGHUAYCMWUUHSGGISYPJCIAGMSYYXMYOPMYOGXYADJAYW"

    Returns: "AACDGGHIJMMOPSSUUWXYYYYGYYYYXWUUSSPOMMJIHGGDCAA"

  45. "BUQTQTGQQXXGQUQ"

    Returns: "GQQQTUXBXUTQQQG"

  46. "OTBOPTB"

    Returns: "BOTPTOB"

  47. "REIZANAADZEREXIRXZYOMQAYXDQOZMDREXN"

    Returns: "AADEEIMNOQRRXXYZZDZZYXXRRQONMIEEDAA"

  48. "LJFGGMOLYGRUDYLGGILBTLCJBGOSITOHUHVVRGGFDDMDGOSCJG"

    Returns: ""

  49. "STUXUDHOVOCHBZVTOGZIHCBDATDTTCRGFUUATIIHRXSDOCHH"

    Returns: ""

  50. "RGTHRITIVSYVKPJVAOSLSBPHNTGONMTIRSLJBTTMIYKR"

    Returns: ""

  51. "QOKEUFEUKGBBNNRZWHAZZAZQZRHFZFGORPUEEPRWU"

    Returns: "ABEEFGHKNOPQRRUUWZZZFZZZWUURRQPONKHGFEEBA"

  52. "WWKZKABQFWQWBCCGJZLTLHGTYQIHUYQAPGJIGUPXX"

    Returns: "ABCGGHIJKLPQQTUWWXYZFZYXWWUTQQPLKJIHGGCBA"

  53. "XFXRELBEBGJLPDBIPXDXIXRVPPDNGFJBYDRYBDDXBNRFF"

    Returns: "BBBDDDEFFGIJLNPPRRXXXYVYXXXRRPPNLJIGFFEDDDBBB"

  54. "BLNSZZGHVUWSNWRNIVAHNWQWWBADQDRNQNLBWDGNBQIUNDB"

    Returns: "ABBDDGHILNNNNQQRSUVWWWZBZWWWVUSRQQNNNNLIHGDDBBA"

  55. "ZNCAQOZNZKLNYSBOZLTQGAUXOAGOIBAUCANXTSDKBYWWIA"

    Returns: ""

  56. "OVWRITRTYYLKOUWLYKWCHICMFFGWYUHLLXOGWKVOWXMKW"

    Returns: "CFGHIKKLLMOORTUVWWWXYYWYYXWWWVUTROOMLLKKIHGFC"

  57. "OLRUZDIWQOODDREDPPOVLIHPCXPCECUHBZQLCSLNVXWB"

    Returns: ""

  58. "CAABACCAAABCCCCAAACCCBBBAACBBB"

    Returns: ""

  59. "BCCCBABBCABCABBCBBCCBCBAABACBACCACAC"

    Returns: ""

  60. "ACAABCCABACBCCACCCBBACAAABCABC"

    Returns: ""

  61. "BBBBABACAABCBCACCBCBBCCBACBBBACACCBCBCACAAB"

    Returns: ""

  62. "BAACABCCBAAAACCBBAABBAAACCABBAC"

    Returns: "AAAAAAABBBBCCCCBCCCCBBBBAAAAAAA"

  63. "BAAAACBBBACCACBAABABBBCACAABBAABCBCBBABAC"

    Returns: "AAAAAAAABBBBBBBBCCCCCCCCCBBBBBBBBAAAAAAAA"

  64. "ACACCCAABCACABBCBAABBACABCBA"

    Returns: ""

  65. "AABCAAACBCBBBBABAACABACCCBBBAACBCBAAABCAAC"

    Returns: ""

  66. "ACCCBACCBABCBCCCCBBBBCBAAAACABCBABCCBABBBBBABAAACA"

    Returns: ""

  67. "CCAACCCCAAABBCAACAACCBBAAACBACCCAACCAAAACCC"

    Returns: ""

  68. "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABB"

    Returns: "AAAAAAAAAAAAAAAAAABABAAAAAAAAAAAAAAAAAA"

  69. "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB"

    Returns: ""

  70. "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADDDDCCBB"

    Returns: "AAAAAAAAAAAAAAABCDDADDCBAAAAAAAAAAAAAAA"

  71. "AABBCCDDDEE"

    Returns: "ABCDEDEDCBA"

  72. "AAAAABCBAAAAAAAAAAAAAAAAAABBA"

    Returns: "AAAAAAAAAAAABBCBBAAAAAAAAAAAA"

  73. "AAZ"

    Returns: "AZA"

  74. "ABCDEFGHIJKLMNOPQRSTUVWXYZWXYZWXYZWXYZWXYZWXYZWXYZ"

    Returns: ""

  75. "ABCDEFGHIJKLMNOPQRSTUVKJHGFDSAQWERTUIPO"

    Returns: ""

  76. "BCDEFGHIJKLMNOPQRSTUVWXYZBCDEFGHIJKLMNOPQRSTUVWXYZ"

    Returns: "BCDEFGHIJKLMNOPQRSTUVWXYZZYXWVUTSRQPONMLKJIHGFEDCB"

  77. "AABBCCDDEEFFGGHHIIJJKKLLMMNNOOPPQQRRSSTTUUVV"

    Returns: "ABCDEFGHIJKLMNOPQRSTUVVUTSRQPONMLKJIHGFEDCBA"

  78. "AAAABBBBCCCCDDDDEEEEFFFFGGGGHHHHYYXXZZZ"

    Returns: "AABBCCDDEEFFGGHHXYZZZYXHHGGFFEEDDCCBBAA"

  79. "ABCDEFGHIJKLMNOPQRSTUVWZXYABCDEFGHIJKLMNOPQRSTUVWX"

    Returns: ""

  80. "AAACCBBBBZZYYYYKKKKBBTT"

    Returns: "ABBBCKKTYYZAZYYTKKCBBBA"

  81. "AAAAAAAAAABBBBBBBBBBAAAAAAAAAABBBBBBBBBBCCCCCC"

    Returns: "AAAAAAAAAABBBBBBBBBBCCCCCCBBBBBBBBBBAAAAAAAAAA"

  82. "AAAABBBBCCCCDDDDEEEEFFFFGGGGHHHHYYXXZZZZ"

    Returns: "AABBCCDDEEFFGGHHXYZZZZYXHHGGFFEEDDCCBBAA"

  83. "A"

    Returns: "A"

  84. "ABCDEFGHIJKLMNOPQRSTUWABCDEFGHIJKLMNOPQRSTUW"

    Returns: "ABCDEFGHIJKLMNOPQRSTUWWUTSRQPONMLKJIHGFEDCBA"

  85. "ADFASDFASDFASDFKAJSLDFKASDLFKJASLDADFADKFJLSDJFL"

    Returns: ""

  86. "AABB"

    Returns: "ABBA"

  87. "AAABBB"

    Returns: ""

  88. "ASDFGHJKLPOIJHGFDSAERTYULKJSDDDDCCASDFGHJKLPOIUYT"

    Returns: ""

  89. "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"

    Returns: "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"

  90. "AABBCCDDEEFFGGHHFFJJDDYYKKBBUUFGHHJJ"

    Returns: ""

  91. "AABCDEFGHIJKLMNOPQRSTUVWXYYXWVUTSRQPONMLKJIHGFEDCB"

    Returns: "ABCDEFGHIJKLMNOPQRSTUVWXYYXWVUTSRQPONMLKJIHGFEDCBA"

  92. "ABCDEFGHIJKLMNOPABCDEFGHIJKLMNOP"

    Returns: "ABCDEFGHIJKLMNOPPONMLKJIHGFEDCBA"

  93. "AB"

    Returns: ""

  94. "ZZZZ"

    Returns: "ZZZZ"

  95. "AAAABBBBCCCCDDDDEEEEFFFFGGGGHHHHYYZZAABB"

    Returns: "AAABBBCCDDEEFFGGHHYZZYHHGGFFEEDDCCBBBAAA"

  96. "ASDFGHJKLQWERTYUIOPZXCVBASDFGHJKLPOIUYTREWQVBCXZ"

    Returns: "ABCDEFGHIJKLOPQRSTUVWXYZZYXWVUTSRQPOLKJIHGFEDCBA"

  97. "ABCDEFGHIJKLMNOPQRSTABCDEFGHIJKLMNOPQRST"

    Returns: "ABCDEFGHIJKLMNOPQRSTTSRQPONMLKJIHGFEDCBA"

  98. "AZ"

    Returns: ""

  99. "AAZAA"

    Returns: "AAZAA"

  100. "AABBCCDDFFGGHHJJKKLLMMNNBBVVCCXXZZAAFFGG"

    Returns: "AABBCCDFFGGHJKLMNVXZZXVNMLKJHGGFFDCCBBAA"

  101. "ABBB"

    Returns: ""

  102. "ABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWX"

    Returns: ""

  103. "BABA"

    Returns: "ABBA"

  104. "AABBB"

    Returns: "ABBBA"

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