/**
 * @function isSortedArray
 * @description Checks if the array is sorted.
 * @param {number[]} arr - array to check if it is sorted
 * @returns {boolean} - true if the array is sorted and false if it's not sorted
 * @example isSortedArray([1,2,3]) => true
 * @example isSortedArray([9,2,3]) => false
*/
export function isSortedArray(arr: number[]): boolean {
	for (let i = 0; i < arr.length - 1; i++) {
		if (arr[i] >= arr[i + 1]) {
			return false;
		}
	}
	return true;
}