Simple parser-like program for math operations using syntax tree in Java

By Hassnain Jamil -

Requirements:

operators supported: ( ) * / + - ^
trigonometric functions: sine, cosine, tangent, cotangent, secant, cosecant
variables from set of a - z, A - Z, 0 - 9, and _ of arbitrary length


  1. must parse "code-like input" and create tokens from it
  2. must build a syntax tree using PEMDAS (http://www.purplemath.com/modules/orderops.htm) order of operations. Feel free to use code from http://castingrays.blogspot.com/2014/10/mathematical-expression-parsing-and.html for reference
  3. Ability to store variables, and variables must be usable in equations
  4. Numeric values supported is the set of ints and doubles
  5. Ability to support user-defined and evaluation of functionsExample: the user inputs “defn square(x) = x * x”square(5) returns 25
  6. Support for basic graphing: e.g. graph( 3 * X ^ 2 + 7) 
  7. Support for trigonometric functions (implemented in the code – do not reference trig functions of the standard library). e.g. sin(30) outputs 0.5
  8. Please include meaningful/informative comments


Additional examples:

takes in arithmetic expressions of arbitrary length in standard infix notation (e.g. 7 + 8 * 9) and returns the result (output in this example 79)
assignment to variables (e.g. b = 7 + 8 * 9 would assign the value of 79 to variable b)
evaluation with variables (e.g. c = 5 * b would assign 395 to c)

CONTACT DETAILS

For any other questions or other tasks please feel free to contact me
via email: mhassnainjamil@gmail.com
via WhatsApp: +92-324-7042178
via skype: hassnainjamil1

Comments

Post a Comment

Popular posts from this blog

[SOLVED] Tape for a Turing Machine using Doubly-linked List in Java with full source code

By Anonymous -
Tape for a Turing Machine (Doubly-linked List) Short exercise in which you will code part of an existing project. In this case, you will be working with a doubly-linked list. To make this topic more interesting, the list that you work on will be part of a Turing Machine. A Turing Machine is a kind of very simple, abstract computing device that was introduced in the 1930's by Alan Turing as a way of studying computation and its limitations. The classes that you need for the lab are in a package named turing. You will define a new class named Tape in this package. You can find the Java source in the code directory. You should copy this directory into an Eclipse project. There will be errors, since the existing classes depend on the Tape class, which you have not yet written. Don't forget the Javadoc comments. A Class for Turing Machine Tapes A Turing machine works on a "tape" that is used for both input and output. The tape is made up of little squares called cell...
Read more

[SOLVED] ICT285 Databases TMA 2017 Assignment 1 | Relational Algebra, Database Design & Implementation

By Anonymous -
Relational Algebra A database records information about athletes competing at the Olympics. An athlete competes for a particular country in one or more events. Events take place at a scheduled day and time in a particular venue. The result (rank) is recorded for all athletes in the final of the event. The medal (gold, silver or bronze) is also recorded for the medal winners in the event. Note that we are not considering team sports or heats in this example – only individuals competing in the finals. The schema for this database is as follows: (Note that primary keys are shown underlined, foreign keys in bold). ATHLETE ( AthleteNo , AthleteName, CountryName) COUNTRY ( CountryName , NumberOfCompetitors) EVENT (EventName, ScheduledStart, VenueName ) VENUE (VenueName, City, Capacity) FINAL ( AthleteNo , EventName , Rank, Medal) Provide relational algebra (NOT SQL) queries to find the following informaList the name and country of all athletes. List the event name and scheduled...
Read more