https://repl.it/C1TA/81 created by sethopia

Is Sorted (2.6) Extra Problems.js

/*
Check if Array is Sorted
Complete the function isSorted, which takes an array as inputed and outputs a boolean indicating if the array's contents are in ascending order.

    isSorted([8,2,3,4])
    // -> false


    isSorted([2,3,4,8])
    // -> true

*/
function isSorted(arr) {
	for (var i = 0; i < arr.length - 1; i++) {
		if (arr[i] > arr[i+1]) return false;
	}
	return true;
}

console.log(isSorted([8,2,3,4]));
console.log(isSorted([2,3,4,8]));



/* 

	Below is the suggested answer. I wonder which is more efficient? Mine uses 6 lines of code, the suggested one uses 8.
	The suggested one stringifies and also does a sort. Mine only does one loop, and if the array isn't sorted mine will
	stop part-way through. So mine might be more efficient. However the biggest advantage that I see of the suggested
	solution is that the code is more straight forward and clear to understand what's happening, whereas mine is a loop
	that has a little more cognitive load to work through.
	
*/


//Helper function for sorting
function sortNums(a,b) {
	return a - b;
}

function isSortedSuggested(arr) {
	var original = arr.toString()
	var sorted = arr.sort(sortNums).toString();
	return original === sorted;
}

Is Sorted (2.6) Extra Problems_console_dump.txt

Native Browser JavaScript
>>> false
true