Do these numbers add up?

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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[edit]

In this example we are learning about lists, iteration, and conditionals.

The Problem[edit]

I found this problem on Daily Coding Problem, a site you should sign up for so you can practice your problem sets[2]

Given a list of numbers and a number k, return whether any two numbers from the list add up to k.

For example, given [10, 15, 3, 7] and k of 17, return true since 10 + 7 is 17.

Hacker edition[edit]

In the hacker version:

Can you do this in one pass?

How you will be assessed[edit]

Your solution will be graded using the following axis:


Scope

  • To what extent does your code implement the features required by our specification?
  • To what extent is there evidence of effort?

Correctness

  • To what extent did your code meet specifications?
  • To what extent did your code meet unit tests?
  • To what extent is your code free of bugs?

Design

  • To what extent is your code written well (i.e. clearly, efficiently, elegantly, and/or logically)?
  • To what extent is your code eliminating repetition?
  • To what extent is your code using functions appropriately?

Style

  • To what extent is your code readable?
  • To what extent is your code commented?
  • To what extent are your variables well named?
  • To what extent do you adhere to style guide?

References[edit]

A possible solution[edit]

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

#Filip
list = [10, 15, 3, 7]
k = 22

def add_up(list, k):
    fit = False
    for a in list:
        for x in range(len(list)):
            if a+list[x] == k:
                fit = True
    return fit
            
print(add_up(list, k))

Give a sequence of brief answers with no explanation.

A unit of abstract mathematical system subject to the laws of arithmetic.

Consider the merits or otherwise of an argument or concept. Opinions and conclusions should be presented clearly and supported with appropriate evidence and sound argument.

Produce a plan, simulation or model.