取汉字首字母方法

定义字符串数组后调用下面的ChnToPY方法即可。

const py: array[216..247] of string = (
{216}'CJWGNSPGCGNESYPB' + 'TYYZDXYKYGTDJNMJ' + 'QMBSGZSCYJSYYZPG' +
{216}'KBZGYCYWYKGKLJSW' + 'KPJQHYZWDDZLSGMR' + 'YPYWWCCKZNKYDG',
{217}'TTNJJEYKKZYTCJNM' + 'CYLQLYPYQFQRPZSL' + 'WBTGKJFYXJWZLTBN' +
{217}'CXJJJJZXDTTSQZYC' + 'DXXHGCKBPHFFSSYY' + 'BGMXLPBYLLLHLX',
{218}'SPZMYJHSOJNGHDZQ' + 'YKLGJHXGQZHXQGKE' + 'ZZWYSCSCJXYEYXAD' +
{218}'ZPMDSSMZJZQJYZCD' + 'JEWQJBDZBXGZNZCP' + 'WHKXHQKMWFBPBY',
{219}'DTJZZKQHYLYGXFPT' + 'YJYYZPSZLFCHMQSH' + 'GMXXSXJJSDCSBBQB' +
{219}'EFSJYHXWGZKPYLQB' + 'GLDLCCTNMAYDDKSS' + 'NGYCSGXLYZAYBN',
{220}'PTSDKDYLHGYMYLCX' + 'PYCJNDQJWXQXFYYF' + 'JLEJBZRXCCQWQQSB' +
{220}'ZKYMGPLBMJRQCFLN' + 'YMYQMSQYRBCJTHZT' + 'QFRXQHXMJJCJLX',
{221}'QGJMSHZKBSWYEMYL' + 'TXFSYDSGLYCJQXSJ' + 'NQBSCTYHBFTDCYZD' +
{221}'JWYGHQFRXWCKQKXE' + 'BPTLPXJZSRMEBWHJ' + 'LBJSLYYSMDXLCL',
{222}'QKXLHXJRZJMFQHXH' + 'WYWSBHTRXXGLHQHF' + 'NMCYKLDYXZPWLGGS' +
{222}'MTCFPAJJZYLJTYAN' + 'JGBJPLQGDZYQYAXB' + 'KYSECJSZNSLYZH',
{223}'ZXLZCGHPXZHZNYTD' + 'SBCJKDLZAYFMYDLE' + 'BBGQYZKXGLDNDNYS' +
{223}'KJSHDLYXBCGHXYPK' + 'DQMMZNGMMCLGWZSZ' + 'XZJFZNMLZZTHCS',
{224}'YDBDLLSCDDNLKJYK' + 'JSYCJLKOHQASDKNH' + 'CSGANHDAASHTCPLC' +
{224}'PQYBSDMPJLPCJOQL' + 'CDHJJYSPRCHNKNNL' + 'HLYYQYHWZPTCZG',
{225}'WWMZFFJQQQQYXACL' + 'BHKDJXDGMMYDJXZL' + 'LSYGXGKJRYWZWYCL' +
{225}'ZMSSJZLDBYDCPCXY' + 'HLXCHYZJQSQQAGMN' + 'YXPFRKSSBJLYXY',
{226}'SYGLNSCMHCWWMNZJ' + 'JLXXHCHSYD CTXRY' + 'CYXBYHCSMXJSZNPW' +
{226}'GPXXTAYBGAJCXLYS' + 'DCCWZOCWKCCSBNHC' + 'PDYZNFCYYTYCKX',
{227}'KYBSQKKYTQQXFCWC' + 'HCYKELZQBSQYJQCC' + 'LMTHSYWHMKTLKJLY' +
{227}'CXWHEQQHTQHZPQSQ' + 'SCFYMMDMGBWHWLGS' + 'LLYSDLMLXPTHMJ',
{228}'HWLJZYHZJXHTXJLH' + 'XRSWLWZJCBXMHZQX' + 'SDZPMGFCSGLSXYMJ' +
{228}'SHXPJXWMYQKSMYPL' + 'RTHBXFTPMHYXLCHL' + 'HLZYLXGSSSSTCL',
{229}'SLDCLRPBHZHXYYFH' + 'BBGDMYCNQQWLQHJJ' + 'ZYWJZYEJJDHPBLQX' +
{229}'TQKWHLCHQXAGTLXL' + 'JXMSLXHTZKZJECXJ' + 'CJNMFBYCSFYWYB',
{230}'JZGNYSDZSQYRSLJP' + 'CLPWXSDWEJBJCBCN' + 'AYTWGMPABCLYQPCL' +
{230}'ZXSBNMSGGFNZJJBZ' + 'SFZYNDXHPLQKZCZW' + 'ALSBCCJXJYZHWK',
{231}'YPSGXFZFCDKHJGXD' + 'LQFSGDSLQWZKXTMH' + 'SBGZMJZRGLYJBPML' +
{231}'MSXLZJQQHZSJCZYD' + 'JWBMJKLDDPMJEGXY' + 'HYLXHLQYQHKYCW',

{232}'CJMYYXNATJHYCCXZ' + 'PCQLBZWWYTWBQCML' + 'PMYRJCCCXFPZNZZL' +
{232}'JPLXXYZTZLGDLDCK' + 'LYRLZGQTGJHHGJLJ' + 'AXFGFJZSLCFDQZ',
{233}'LCLGJDJCSNCLLJPJ' + 'QDCCLCJXMYZFTSXG' + 'CGSBRZXJQQCTZHGY' +
{233}'QTJQQLZXJYLYLBCY' + 'AMCSTYLPDJBYREGK' + 'JZYZHLYSZQLZNW',
{234}'CZCLLWJQJJJKDGJZ' + 'OLBBZPPGLGHTGZXY' + 'GHZMYCNQSYCYHBHG' +
{234}'XKAMTXYXNBSKYZZG' + 'JZLQJDFCJXDYGJQJ' + 'JPMGWGJJJPKQSB',
{235}'GBMMCJSSCLPQPDXC' + 'DYYKYWCJDDYYGYWR' + 'HJRTGZNYQLDKLJSZ' +
{235}'ZGZQZJGDYKSHPZMT' + 'LCPWNJAFYZDJCNMW' + 'ESCYGLBTZCGMSS',
{236}'LLYXQSXSBSJSBBGG' + 'GHFJLYPMZJNLYYWD' + 'QSHZXTYYWHMCYHYW' +
{236}'DBXBTLMSYYYFSXJC' + 'SDXXLHJHF SXZQHF' + 'ZMZCZTQCXZXRTT',
{237}'DJHNNYZQQMNQDMMG' + 'LYDXMJGDHCDYZBFF' + 'ALLZTDLTFXMXQZDN' +
{237}'GWQDBDCZJDXBZGSQ' + 'QDDJCMBKZFFXMKDM' + 'DSYYSZCMLJDSYN',
{238}'SPRSKMKMPCKLGDBQ' + 'TFZSWTFGGLYPLLJZ' + 'HGJJGYPZLTCSMCNB' +
{238}'TJBQFKTHBYZGKPBB' + 'YMTDSSXTBNPDKLEY' + 'CJNYCDYKZDDHQH',
{239}'SDZSCTARLLTKZLGE' + 'CLLKJLQJAQNBDKKG' + 'HPJTZQKSECSHALQF' +
{239}'MMGJNLYJBBTMLYZX' + 'DCJPLDLPCQDHZYCB' + 'ZSCZBZMSLJFLKR',
{240}'ZJSNFRGJHXPDHYJY' + 'BZGDLJCSEZGXLBLH' + 'YXTWMABCHECMWYJY' +
{240}'ZLLJJYHLGBDJLSLY' + 'GKDZPZXJYYZLWCXS' + 'ZFGWYYDLYHCLJS',
{241}'CMBJHBLYZLYCBLYD' + 'PDQYSXQZBYTDKYYJ' + 'YYCNRJMPDJGKLCLJ' +
{241}'BCTBJDDBBLBLCZQR' + 'PPXJCGLZCSHLTOLJ' + 'NMDDDLNGKAQHQH',
{242}'JHYKHEZNMSHRP QQ' + 'JCHGMFPRXHJGDYCH' + 'GHLYRZQLCYQJNZSQ' +
{242}'TKQJYMSZSWLCFQQQ' + 'XYFGGYPTQWLMCRNF' + 'KKFSYYLQBMQAMM',
{243}'MYXCTPSHCPTXXZZS' + 'MPHPSHMCLMLDQFYQ' + 'XSZYJDJJZZHQPDSZ' +
{243}'GLSTJBCKBXYQZJSG' + 'PSXQZQZRQTBDKYXZ' + 'KHHGFLBCSMDLDG',
{244}'DZDBLZYYCXNNCSYB' + 'ZBFGLZZXSWMSCCMQ' + 'NJQSBDQSJTXXMBLT' +
{244}'XZCLZSHZCXRQJGJY' + 'LXZFJPHYXZQQYDFQ' + 'JJLZZNZJCDGZYG',
{245}'CTXMZYSCTLKPHTXH' + 'TLBJXJLXSCDQXCBB' + 'TJFQZFSLTJBTKQBX' +
{245}'XJJLJCHCZDBZJDCZ' + 'JDCPRNPQCJPFCZLC' + 'LZXBDMXMPHJSGZ',
{246}'GSZZQLYLWTJPFSYA' + 'SMCJBTZYYCWMYTCS' + 'JJLQCQLWZMALBXYF' +
{246}'BPNLSFHTGJWEJJXX' + 'GLLJSTGSHJQLZFKC' + 'GNNDSZFDEQFHBS',
{247}'AQTGYLBXMMYGSZLD' + 'YDQMJJRGBJTKGDHG' + 'KBLQKBDMBYLXWCXY' +
{247}'TTYBKMRTJZXQJBHL' + 'MHMJJZMQASLDCYXY' + 'QDLQCAFYWYXQHZ'
    );

function ChnPy(Value: array of char): Char;
begin
  Result := #0;
  case Byte(Value[0]) of
    176:
      case Byte(Value[1]) of
        161..196: Result := 'A';
        197..254: Result := 'B';
      end; {case}
    177:
      Result := 'B';
    178:
      case Byte(Value[1]) of
        161..192: Result := 'B';
        193..205: Result := 'C';
        206: Result := 'S'; //参
        207..254: Result := 'C';
      end; {case}
    179:
      Result := 'C';
    180:
      case Byte(Value[1]) of
        161..237: Result := 'C';
        238..254: Result := 'D';
      end; {case}
    181:
      Result := 'D';
    182:
      case Byte(Value[1]) of
        161..233: Result := 'D';
        234..254: Result := 'E';
      end; {case}
    183:
      case Byte(Value[1]) of
        161: Result := 'E';
        162..254: Result := 'F';
      end; {case}
    184:
      case Byte(Value[1]) of
        161..192: Result := 'F';
        193..254: Result := 'G';
      end; {case}
    185:
      case Byte(Value[1]) of
        161..253: Result := 'G';
        254: Result := 'H';
      end; {case}
    186:
      Result := 'H';
    187:
      case Byte(Value[1]) of
        161..246: Result := 'H';
        247..254: Result := 'J';
      end; {case}
    188..190:
      Result := 'J';
    191:
      case Byte(Value[1]) of
        161..165: Result := 'J';
        166..254: Result := 'K';
      end; {case}
    192:
      case Byte(Value[1]) of
        161..171: Result := 'K';
        172..254: Result := 'L';
      end; {case}
    193:
      Result := 'L';
    194:
      case Byte(Value[1]) of
        161..231: Result := 'L';
        232..254: Result := 'M';
      end; {case}
    195:
      Result := 'M';
    196:
      case Byte(Value[1]) of
        161..194: Result := 'M';
        195..254: Result := 'N';
      end; {case}
    197:
      case Byte(Value[1]) of
        161..181: Result := 'N';
        182..189: Result := 'O';
        190..254: Result := 'P';
      end; {case}
    198:
      case Byte(Value[1]) of
        161..217: Result := 'P';
        218..254: Result := 'Q';
      end; {case}
    199:
      Result := 'Q';
    200:
      case Byte(Value[1]) of
        161..186: Result := 'Q';
        187..245: Result := 'R';
        246..254: Result := 'S';
      end; {case}
    201..202:
      Result := 'S';
    203:
      case Byte(Value[1]) of
        161..249: Result := 'S';
        250..254: Result := 'T';
      end; {case}
    204:
      Result := 'T';
    205:
      case Byte(Value[1]) of
        161..217: Result := 'T';
        218..254: Result := 'W';
      end; {case}
    206:
      case Byte(Value[1]) of
        161..243: Result := 'W';
        244..254: Result := 'X';
      end; {case}
    207..208:
      Result := 'X';
    209:
      case Byte(Value[1]) of
        161..184: Result := 'X';
        185..254: Result := 'Y';
      end; {case}
    210..211:
      Result := 'Y';
    212:
      case Byte(Value[1]) of
        161..208: Result := 'Y';
        209..254: Result := 'Z';
      end; {case}
    213..215:
      Result := 'Z';
    216..247:
      Result := py[Byte(Value[0])][Byte(Value[1]) - 160];
  end; {case}
end;

function ChnToPY(Value: string): string;
var
  I, L: Integer;
  C: array[0..1] of char;
  R: Char;
begin
  Result := '';
  L := Length(Value);
  I := 1;
  while I <= (L - 1) do
  begin
    if Value[I] < #160 then
    begin
      Result := Result + Value[I];
      Inc(I);
    end
    else
    begin
      C[0] := Value[I];
      C[1] := Value[I + 1];
      R := ChnPY(C);
      if r <> #0 then
        Result := Result + R;
      Inc(I, 2);
    end;
  end;
  if I = L then
    Result := Result + Value[L];
end;