How to find if Array can be converted into Max Array (all elements equal to max value) Constraints -

Given any array of natural numbers, for eg: [2, 1, 2, 3] Find if array can be converted into Max array (print- “YES”) or if not (print - “NO”)

to make it Max array - convert every element of array equal to its maximum element. In above eg it will be [3, 3, 3, 3] but by following these rules -

  1. Increment any two elements by 1 at a time (exactly 2 elements. you cannot increment one or more than two elements at a time)
  2. Do this multiple times until you convert every element equal to max elements (print “YES” if possible else “NO”)

Sample input: [2, 1, 2, 3]

Expected Output: “YES”


Step 1: increment first and second element by 1 -

[3, 2, 2, 3]

Step 2: increment second and third element by 1 -

[3, 3, 3, 3]

Can anyone point to the solution - any link, similar question, pattern or solution? Thank you

Firstly, welcome to the forums.

While we are primarily here to help people with their Free Code Camp progress, we are open to people on other paths, too. Some of what you are asking is pretty trivial in the Free Code Camp context, so you might find that if you’re not getting the instruction and material you need in your current studies, the FCC curriculum will really help you get started. At a modest guess I’d say investing a 4-5 hours working through the curriculum here will really pay off. You can find the curriculum at

With your current questions, we don’t have enough context to know what you already know or don’t know, so it is impossible to guide you without just telling you the answer (which we won’t do).

It is pretty typical on here for people to share a codepen / / jsfiddle example of what they have tried so that anyone helping has more of an idea of what help is actually helpful.

Please provide some example of what you’ve tried and I’m sure you’ll get more help.

Happy coding :slight_smile:

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