Converting array elements into range in php

Question

I’m working on an array of numeric values.

I have a array of numeric values as the following in PHP

11,12,15,16,17,18,22,23,24

And

Answer 1

You have to code it yourself ;-)

The algorithm is quite simple:

• Iterate over the items.
• Remember the previous item and the start of the range.
• For each item (except the first one) check:
  • If currentItem = prevItem + 1 then you haven't found a new range. Continue.
  • Otherwise your range has ended. Write down the range. You have remembered the start of the range. The end is the previous item. The new range starts with the current item.
  • The first item always starts a new range. Remember this one as start of the range.
• Don't forget to write down the current range when leaving the loop.