How to check if array is already sorted

Question

so how to make such logic

int[] arr = {2, 5, 3};

if (/* arr is sorted */)
    ....
else 
    ...

Its bad that method Array.sort is void

Answer 1

You can use .every

let isSorted = array.every((v, i) => (i === 0 || v <= array[i - 1]))
  || array.every((v, i) => (i === 0 || v >= array[i - 1]))