ryanwilsond / StockMotionProblem

StockMotion Interview Problem

At StockMotion, we use conditional logic in our database activity documents to dynamically customize the experience for an end user. At a high level, we have a JSON configuration that represents this conditional logic in the following way (somewhat simplified):

{
    index: 1,
    operator: 'equals',
    value: 'Yes'
}

We also have a list of responses that could look something like this:

['No', 'Yes', '2', '7', ...]

In this case, since the response value at index 1 equals 'Yes', then this condition returns True.

Your task is, create a solution that can read a JSON config (following the example above) and a list of responses and returns a boolean (true/false) of whether or not the condition passes.

Your solution should pass the following test cases:

1. input:

   {
       index: 1,
       operator: 'equals',
       value: 'Yes'
   },
   ['No', 'Yes', '2', '7']
   

   output: true

2. input:

   {
       index: 0,
       operator: 'equals',
       value: 'False'
   },
   ['True', 'False', 'Sometimes']
   

   output: false

3. input:

   {
       index: 2,
       operator: 'equals',
       value: 'Sometimes'
   },
   ['True', 'False', 'Sometimes']
   

   output: true

Stretch:

If you finish the task above and want an additional challenge, try implementing some of these additional 'operator' types. Here is a list of conditional operators we support:

• 'equals'
• 'notEquals'
• 'greaterThan'
• 'lessThan'
• 'contains' (if the result string contains the provided substring value, then true)

Example: input:

{
    index: 0,
    operator: 'greaterThan',
    value: '0'
},
['1', '3', '2']

output: true

(note, you can assume that the 'value' provided in the case of greaterThan/lessThan will be a string that can be converted to an integer)