Algorithms Cheat Sheet

8/14/2019 Algorithms Cheat Sheet

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Identifiers and Declaring VariableIn Jython, you dont need to declare the variable type.

Java Visual Basic Jythonint x=0; ' Using explicit typing.

Di x !s Integer = 0' Using local type in"erence. Di x = 0

x=0

stringx=hello;

' Using explicit typing. Di x !s #tring = $hello$' Using local type in"erence. Di x = $hello$

x=hello

In Jython, you can easily change a variable type %ithout any conse&uences. or exa ple(x=hellox=)y=*.+x=x-y

In this exa ple x %ent "or a string to an integer to a "loat.

ExpressionsNumeric Operators

Operator Description+ Addition- Subtraction* Multiplication/ Division// Truncating Division% Modulo (Remainder of Division** !o"er #perator +var $nar !lus-var $nar Minus

Mathematical Built-in FunctionsFunction Descriptionabs(var Absolute valuepo"(&' an be used in place of ** operator po"(&' 'modulo Ternar po"er-modulo (& ** % moduloround(var)' n Returns a value rounded to t e nearest , -n or (, **-n ' " ere n defaults to divmod(&' Returns a tuple of t e .uotient and t e remainder of division

Comparison OperatorsOperator Description

0reater t an1 2ess t an

3 0reater t an or e.ual13 2ess t an or e.ual!3 4ot e.ual33 5.ual

Bitwise OperatorsOperator Description6 7it"ise and operator copies a bit to t e result if a bit appears in bot operands88 7it"ise or operator copies a bit to t e result if it e&ists in eit er of t e operands9 7it"ise &or operator copies a bit to t e result if it e&ists in onl one operand: 7it"ise negation operator flips t e bits' and returns t e e&act opposite of eac bit
http://www.jython.org/jythonbook/en/1.0/OpsExpressPF.html#id1http://www.jython.org/jythonbook/en/1.0/OpsExpressPF.html#id3http://www.jython.org/jythonbook/en/1.0/OpsExpressPF.html#id3http://www.jython.org/jythonbook/en/1.0/OpsExpressPF.html#id1


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hift OperatorsOperator Descriptionx


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list(se.uence onverts a given se.uence into a listlong(value )' base onverts to a long using a base if a string is givenoct(value onverts an integer to a string representing t at number as an octalord(value onverts a c aracter into its integer valuerepr(value onverts obBect into an e&pression string? Same as enclosing e&pression in

reverse .uotes ( x + y ? Returns a string containing a printable andevaluable representation of t e obBect

set(se.uence onverts a se.uence into a setstr(value onverts an obBect into a string Returns a string containing a printable

representation of t e value' but not an evaluable stringtuple(se.uence onverts a given se.uence to a tupleunic r(value onverts integer to a $nicode c aracter

Modif#ing a %ist'ethod (as)s er"or#edappend*value+ Add a value to t e end of a listextend*list+ Add anot er list to t e end of a listinsert*index, value+ Sorts t e items contained "it in t e list and returns t e list

%ist Methods'ethod (as)s er"or#edindex Returns t e inde& of t e first value in t e list " ic matc es a given value?

count Returns t e number of items in t e list " ic e.ual a given value?sort Sorts t e items contained "it in t e list and returns t e listreverse Reverses t e order of t e items contained "it in t e list' and returns t e list

tatements if

o /valuates an expression and executes one or ore state ents %hen the expression is truei" x y(

1=y elif and else

o 2hese are optional and execute state ents only %hen previous expressions in the i" bloc3 are"alse. !n i" bloc3 can include ultiple eli" state ents./xa ple +(

i" x y(1=y

else(1=x

/xa ple (i" x y(

1=yeli" x4y

1=xelse(

1=0 &hile %oop

o 5epeatedly executes one or ore state ents in a loop as long as an expression re ains true.x=0%hile x +000(

x6=+ for %oop

o 5epeatedly executes one or ore state ents in a loop as long as the index does not e&ual therange. 2he initial index de"aults to + and is incre ented by + on each iteration.


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"=+"or index in range7+08(

"="-index

continueo 2e porarily interrupts the execution o" a progra loop, s3ipping any re aining state ents in the

body o" the loop "or the current pass. 2he continue state ent does not cause an i ediate exit"ro the loop as a brea3 or return state ent %ould do, but instead continues %ithin the loop "oras long as the stated "or or %hile condition holds true.

even9ist=:nu 9ist=:,*,* ),),* ,>,*),>, ,* ,>?"or value in nu list(

i" value @ A= 0continue

even9ist.append7value8 brea'

o 2er inates the execution o" a "or or %hile loop. #tate ents in the loop that appear a"ter the brea3state ent are not executed.

even9ist=:x=+0%hile 2rue(

i" x==0(brea3

i" B+--x==+(even9ist.append7x8

xB=+

(#thon Modulesomplete list can be found at ttp //"""?B t on?org/docs/librar /inde&progress? tml

Cu eric and athe atical odules ath E athe atical "unctions c ath E athe atical "unctions "or co plex nu bers deci al E Deci al "ixed point and "loating point arith etic rando E Fenerate pseudoBrando nu bers itertools E unctions creating iterators "or e""icient looping "unctools E Gigher order "unctions and operations on callable obHects operator E #tandard operators as "unctions

e"ore using any "unction %ithin these odules, use the i port state ent

/xa ple

i port ath

x= ath.su 7:+, ,*, , ,),>,


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DomainsDomain States UOM Description

BeamPosition: Az

All Scans Degrees Contributes to the scan azimuth offset. This is cumulative suchthat multiple modulations will sum to a final solution.

BeamPosition: El

All Scans Degrees Contributes to the scan elevation offset. This is cumulative suchthat multiple modulations will sum to a final solution.

ConicalRotationRate

Conical Scan Hz The rate, measured in Hz, of the Conical Scan element.

ConicalScan StartAngle

Conical Scan Degrees The starting point, measured in degrees, of a Conical Scan, with0 degrees being the top of the scan, and rotating cloc wise.

ConicalSquint

Conical Scan Degrees The S!uint Angle of the Conical Scan, measured in degrees.

Slew Rate Continuous

Scan

Degrees"s The angular speed of the beam during a scan segment, measure

in degrees per secondScan Extent Continuous

ScanDegrees The total angular distance of a scan segment, measured in

degrees.

Power #ower $ilowatts The pea power measured at the antenna feedport, measured inilowatts.

PR #%& #icoseconds The duration of the #%& in picoseconds

ERP '%# d() The effective radiated power *'&+ onl -

Axial Ratio #olarization d( The ratio between the +a or and +inor a/is, measured indecibels.

Ma!or Axis"ilt

#olarization Degrees The angle between the +a or a/is of the polarization and thehorizontal a/is of the coordinate s stem, measured in degrees.

Polarization RotationRate

#olarization Hz The number of times per second that the polarizationmechanicall rotates through the same +a or a/is tilt.

PulseDuration

#ulse #icoseconds The duration of the #ulse, measured in picoseconds.

R#: OnPulse

#ulse +egahertz Contributes to offset the scoped fre!uenc . This is cumulativesuch that multiple modulations will sum to a final solution.

P$ase: OnPulse

#ulse Degrees Contributes to the phase offset on pulse. This is cumulative suchthat multiple modulations will sum to a final solution.

R#: Carrier % +egahertz The carrier fre!uenc , measured in megahertz.R#: O%%set Dela , Time

&nterval+egahertz Contributes to offset the scoped fre!uenc . This is cumulative

such that multiple modulations will sum to a final solution.

P$ase:O%%set

Dela , Time&nterval

Degrees Contributes offset to the scoped phase. This is cumulative suchthat multiple modulations will sum to a final solution.

time&uration

TemporalStates

#icoseconds Sets the duration of the temporal state.

position Switch String A 1pseudo domain1 for setting switch position b position in analgorithm e/pression.


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la'el Switch String A 1pseudo domain1 for setting switch position b label in analgorithm e/pression.

#stem VariablesVariable

NameDescription

timeIn cope 2he scoped li"eti e o" this state. 2he value starts at 0 on entranceto this state and incre ents %ith each execution step until thestate 7or its parenting container8 exits. 2i e is easured inpicoseconds.

container*ime

2he scoped li"eti e o" this state's parenting container. 2he valuestarts at 0 on entrance into the container and incre ents %itheach execution ti e step until the container co pletes and exits.

2i e is an integer easured in picoseconds.

random eed 2he rando i1er seed this si ulation is using. I" the algorith usesa rando i1er routine it should seed the rando i1er %ith this value"irst. rando #eed ay be Cone.

global*ime 2he global ti e o" the si ulation. 2i e is an integer easured inpicoseconds.

+elper FunctionGelper ethods available to #tates(

getK5I getKrevK5I

setK5I iringLrder

get5

getKrev5

set5 iringLrder

getKulseDuration

getKrevKulseDuration

setKulseDuration iringLrder

set5 LnKulse iringLrder

setKhaseLnKulse iringLrder

getKreviousMave"or

get#canKosition


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get /K#ID

Gelper ethods available to #%itches(

set iringLrder yKosition

set iringLrder y9abel

Debugginglogger.in"o7NvariableO6str7variablePalue88

Configuration File?xml version="1.0" encoding="UTF-8"?>


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Algorithms Cheat Sheet

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