New execution of listpermutations, Computer Engineering

Assignment Help:

Update the permutation algorithm from the text to obtainthe correct list of permutations even if the string haves repeated letters. For example, if you call ListPermutations on the string "AABB", your program should not generate as many permutations as it does for the string "ABCD" because some of the strings generated by the standard algorithm would be indistinguishable from others. Your program should instead obtain the following six:

AABB

ABAB

ABBA

BAAB

BABA

BBAA

Write a new execution of ListPermutations that works correctly even if the string contains duplicated letters. In writing this execution, you should not merely keep a list of permutations that have already be encountered and avoid generating duplicates. Instead, you should think carefully about the recursive structure of the problem and find a way to avoid generating the duplicates in the first place. You may suppose the string haves only upper case letters from A to Z.

 


Related Discussions:- New execution of listpermutations

standard console application, Three projects as follows: a. Life  stati...

Three projects as follows: a. Life  static library, code for every needed  function in the Life program. b. LifeGame  .exe application, i.e., a standard console application t

Prolog, Prolog: Still we can take our card game from the previous lect...

Prolog: Still we can take our card game from the previous lecture like a case study for the implementation of a logic-based expert system. So there the rules were: four cards

Explain virtual packets, Explain Virtual Packets. The router can't tran...

Explain Virtual Packets. The router can't transfer a copy of a frame from one kind of network to other since the frame formats be different. More significantly, the router cann

By which exposing EPROM contents can be erased, EPROM contents can be eras...

EPROM contents can be erased by exposing it to ? Ans. By exposing EPROM contents to Ultraviolet rays, it can be erased. The Ultraviolet (UV) light passes throughout a window i

Explain collaboration on task and event management, What is difference betw...

What is difference between collaboration on task and event management? Web-based task management application let the user handle the multiple pieces and parts of large projects

Compute the coefficient for classifier, Consider the data with categorical ...

Consider the data with categorical predictor x 1 = { green or red } and numerical predictor x 2 and the class variable y shown in the following table. The weights for a round

What is a structure, What is a structure? A structure is a collection o...

What is a structure? A structure is a collection of variables under a single name. These variables can be of different types, and each has a name which is used to select it fro

Describe the architecture of electronic data exchange, Describe the Electro...

Describe the Electronic Data Exchange (EDI) architecture in brief. Electronic Data Interchange (EDI) may be generally easy to understand as the replacement of paper-based purch

Embedded system design using c, W To date we have discussed elementary high...

W To date we have discussed elementary high level language programming and low level assembler programming, one of the benefits of C is the integration of both , this requires a re

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd