DIY: Split Array into Consecutive Subsequences

Solve the interview question "Split Array into Consecutive Subsequences" yourself in this lesson.

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Problem statement

Given an array sorted in ascending order, determine if it’s possible to split the array into one or more subsequences such that each subsequence consists of consecutive integers and has a length of at least 3 integers.


The input will be an array of sorted numbers. The following is an example input:

[1, 2, 3, 3, 4, 4, 5, 5]


The output should show whether the numbers can make consecutive subsequences of a length 3 or more. For the above input, the output should be:


Coding exercise

For this coding exercise, you need to implement the isPossible(arr) function, where arr is the sorted list of numbers. The function should return either true or false depending on whether the consecutive subsequences exist or not.

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