Java: sort a String array, whose strings represent int

Question

I have String[] array like

{\"3\",\"2\",\"4\",\"10\",\"11\",\"6\",\"5\",\"8\",\"9\",\"7\"}

I want to sort it in numerical ord

Answer 1

If all elements if your String array represent numbers, and if the numbers are always positive, then there is a simple way to sort numerically without a limit to the value of the number.

This is based on the fact that a number with a larger number of digits is, in that case, always higher than a number with a smaller number of digits.

You first compare the number of digits, and then (only if the number of digits is the same) you compare the value alphabetically:

Arrays.sort(array,
            Comparator.comparing(String::length).thenComparing(Function.identity()));