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

Breifly explain memory-to-memory architecture, Memory-to-Memory Architectur...

Memory-to-Memory Architecture The pipelines can access vector operands intermediate and final results straight in main memory. This necessitates the higher memory bandwidth. Fu

What are the steps in executing the program, What are the steps in executin...

What are the steps in executing the program? 1.Fetch 2.Decode 3.Execute 4.Store

Illustrate organisation of dram chip, Q. Illustrate Organisation of DRAM Ch...

Q. Illustrate Organisation of DRAM Chip? The given figure is a typical organisation of 16 mega bit DRAM. It displays a typical organisation of 2048 × 2048 × 4 bit DRAM chip. Me

Minimum number of two input nand gates in assembly line, An assembly line c...

An assembly line consists of 3 fail safe sensors and one emergency shutdown switch. The line must keep moving unless any of the given conditions occur: a. When the emergency swi

.bus, clasification of bus

clasification of bus

Categorize the cpu scheduling algorithms, Categorize the CPU scheduling alg...

Categorize the CPU scheduling algorithms? The various CPU scheduling algorithms are categorized as given below:

Database management system, Consider the following instance of the Students...

Consider the following instance of the Students relation, sorted by gpa. sid name login age gpa 53831 Madayan madayan@music 11 1.8 53832 Guldu guldu@music 12 2.0 53688 Smith smith

3 sets of input data, Prepare at least 3 sets of input data (Test data) alo...

Prepare at least 3 sets of input data (Test data) along with expected output for testing your program.

Don''t care states, The conflict between too hot and too cold or too slow a...

The conflict between too hot and too cold or too slow and too fast can be resolved using don't care states. Don't care states are used when i) the state of the output is not

Explain time switching, Explain Time Switching. Time Switches: The ...

Explain Time Switching. Time Switches: The principle of a time switch is demonstrated in figure. This connects an incoming n channel PCM highway to an outgoing n channel PC

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