Bracket validator

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This a problem set for you to work through [1]

This is a problem set. Some of these are easy, others are far more difficult. The purpose of these problems sets are:

  1. to build your skill applying computational thinking to a problem
  2. to assess your knowledge and skills of different programming practices


What is this problem set trying to do

You must applyUse an idea, equation, principle, theory or law in relation to a given problem or issue. your understanding of stacks and queues (and probably reading from a file) to solve this problem.

The Problem

You're working with an intern that keeps coming to you with JavaScript code that won't run because the braces, brackets, and parentheses are off. To save you both some time, you decide to write a braces/brackets/parentheses validator.[2]


Let's say:

  • '(', '{', '[' are called "openers."
  • ')', '}', ']' are called "closers."

Write an efficient function that tells us whether or not an input string's openers and closers are properly nested.


Unit Tests

  • "{ [ ] ( ) }" should return True
  • "{ [ ( ] ) }" should return False
  • "{ [ }" should return False

Hacker edition

In the hacker version:

  • Your program should report which line numbers might be the problem.


How you will be assessed

Your solution will be graded using the following axis:


Scope

  • To what extentConsider the merits or otherwise of an argument or concept. Opinions and conclusions should be presented clearly and supported with appropriate evidence and sound argument. does your code implement the features required by our specification?
  • To what extentConsider the merits or otherwise of an argument or concept. Opinions and conclusions should be presented clearly and supported with appropriate evidence and sound argument. is there evidence of effort?

Correctness

  • To what extentConsider the merits or otherwise of an argument or concept. Opinions and conclusions should be presented clearly and supported with appropriate evidence and sound argument. did your code meet specifications?
  • To what extentConsider the merits or otherwise of an argument or concept. Opinions and conclusions should be presented clearly and supported with appropriate evidence and sound argument. did your code meet unit tests?
  • To what extentConsider the merits or otherwise of an argument or concept. Opinions and conclusions should be presented clearly and supported with appropriate evidence and sound argument. is your code free of bugs?

DesignProduce a plan, simulation or model.

  • To what extentConsider the merits or otherwise of an argument or concept. Opinions and conclusions should be presented clearly and supported with appropriate evidence and sound argument. is your code written well (i.e. clearly, efficiently, elegantly, and/or logically)?
  • To what extentConsider the merits or otherwise of an argument or concept. Opinions and conclusions should be presented clearly and supported with appropriate evidence and sound argument. is your code eliminating repetition?
  • To what extentConsider the merits or otherwise of an argument or concept. Opinions and conclusions should be presented clearly and supported with appropriate evidence and sound argument. is your code using functions appropriately?

Style

  • To what extentConsider the merits or otherwise of an argument or concept. Opinions and conclusions should be presented clearly and supported with appropriate evidence and sound argument. is your code readable?
  • To what extentConsider the merits or otherwise of an argument or concept. Opinions and conclusions should be presented clearly and supported with appropriate evidence and sound argument. is your code commented?
  • To what extentConsider the merits or otherwise of an argument or concept. Opinions and conclusions should be presented clearly and supported with appropriate evidence and sound argument. are your variables well named?
  • To what extentConsider the merits or otherwise of an argument or concept. Opinions and conclusions should be presented clearly and supported with appropriate evidence and sound argument. do you adhere to style guide?

References

A possible solution

Click the expand link to see one possible solution, but NOT before you have tried and failed!

not yet!