(*// 标题:无限进制转换 说明:使用于数学领域进制之间相互转换 设计:Zswang 日期:2002-01-24 支持:[email protected] //*)///////Begin Source const cScaleChar = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';function IntPower(Base, Exponent: Integer): Integer; { 返回Base的Exponent次方 } var I: Integer; begin Result := 1; for I := 1 to Exponent do Result := Result * Base; end; { IntPower }function IntToDigit(mNumber: Integer; mScale: Byte; mLength: Integer = 0): string; { 返回整数的进制表示;mScale指定多少进制;mLength指定长度,长度不足时向前补0 } var I, J: Integer; begin Result := ''; I := mNumber; while (I >= mScale) and (mScale > 1) do begin J := I mod mScale; I := I div mScale; Result := cScaleChar[J + 1] + Result; end; Result := cScaleChar[I + 1] + Result; for I := 1 to mLength - Length(Result) do Result := '0' + Result; end; { IntToDigit }function DigitToInt(mDigit: string; mScale: Byte): Integer; { 返回进制表示转换成整数;mScale指定多少进制 } var I: Byte; L: Integer; begin Result := 0; mDigit := UpperCase(mDigit); L := Length(mDigit); for I := 1 to L do Result := Result + (Pos(mDigit[L - I + 1], cScaleChar) - 1) * IntPower(mScale, I - 1); end; { DigitToInt } ///////End Source//try var Str :String; Int : Integer; begin Str := '101'; //表示整数为5 Int := DigitToInt(Str, 2); ShowMessage(IntToStr(Int)); end;
标题:无限进制转换
说明:使用于数学领域进制之间相互转换
设计:Zswang
日期:2002-01-24
支持:[email protected]
//*)///////Begin Source
const
cScaleChar = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';function IntPower(Base, Exponent: Integer): Integer; { 返回Base的Exponent次方 }
var
I: Integer;
begin
Result := 1;
for I := 1 to Exponent do
Result := Result * Base;
end; { IntPower }function IntToDigit(mNumber: Integer; mScale: Byte;
mLength: Integer = 0): string;
{ 返回整数的进制表示;mScale指定多少进制;mLength指定长度,长度不足时向前补0 }
var
I, J: Integer;
begin
Result := '';
I := mNumber;
while (I >= mScale) and (mScale > 1) do begin
J := I mod mScale;
I := I div mScale;
Result := cScaleChar[J + 1] + Result;
end;
Result := cScaleChar[I + 1] + Result;
for I := 1 to mLength - Length(Result) do Result := '0' + Result;
end; { IntToDigit }function DigitToInt(mDigit: string; mScale: Byte): Integer;
{ 返回进制表示转换成整数;mScale指定多少进制 }
var
I: Byte;
L: Integer;
begin
Result := 0;
mDigit := UpperCase(mDigit);
L := Length(mDigit);
for I := 1 to L do
Result := Result + (Pos(mDigit[L - I + 1], cScaleChar) - 1) *
IntPower(mScale, I - 1);
end; { DigitToInt }
///////End Source//try
var
Str :String;
Int : Integer;
begin
Str := '101'; //表示整数为5
Int := DigitToInt(Str, 2);
ShowMessage(IntToStr(Int));
end;