Q7. Objects (15 Marks)

Complete the functions in q7/objects.js based on the interface below.

Function Description Parameters Errors Success

Function	Description	Parameters	Errors	Success
`isSameLength`	The function should take in two arrays and returns true if they have the same length, and false otherwise.	`a`: list of any type, `b`: list of any type	N/A	`true`: if same length `false`: if different length
`zip`	Takes in two arrays and combines them together index-wise into a list of lists.	`a`: list of any type, `b`: list of any type	`Error`: throw exception if the lists are not of the same length	A list of inner lists, where each inner list pairs the input lists index pair-wise. `a = ['a', 'b', 'b'] b = [1, 2, 3] > zip(a, b) [['a', 1], ['b', 2], ['b', 3]]`
`constructObject`	Takes two arrays and returns an object composed of keys from the first array and values from the second.	`keys`: list of keys to be in the object. Keys are guaranteed to be string-able. `values`: list of values to be in the object. Can be of any type.	`Error`: throw exception if the lists are not of the same length	If the lists are of the same length: `a1 = ['a', 'b', 'c'] a2 = [1, 2, 3] > constructObject(a1, a2) {'a': 1, 'b': 2, 'c': 3}` If a key appears more than once in the first array, the LAST matching value from the second list is used: `> constructObject(['a', 'b', 'b', 'c'], [1, 2, 3, 4]) {'a': 1, 'b': 3, 'c': 4}`

isSameLength

The function should take in two arrays and returns true if they have the same length, and false otherwise.

N/A

zip

Takes in two arrays and combines them together index-wise into a list of lists.

A list of inner lists, where each inner list pairs the input lists index pair-wise.

a = ['a', 'b', 'b']
b = [1, 2, 3]
> zip(a, b)
[['a', 1], ['b', 2], ['b', 3]]

constructObject

Takes two arrays and returns an object composed of keys from the first array and values from the second.

keys: list of keys to be in the object. Keys are guaranteed to be string-able.
values: list of values to be in the object. Can be of any type.

If the lists are of the same length:

  a1 = ['a', 'b', 'c']
  a2 = [1, 2, 3]

  > constructObject(a1, a2)
  {'a': 1, 'b': 2, 'c': 3}

If a key appears more than once in the first array, the LAST matching value from the second list is used:

> constructObject(['a', 'b', 'b', 'c'], [1, 2, 3, 4])
{'a': 1, 'b': 3, 'c': 4}

When you think your program is working, you can run some simple automated tests:

The submission will only collect the q7/objects.js file. All other files are replaced in automarking.

When you've finished working, submit your answer by running:

submit --question 7

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