Strictly Increasing or Decreasing
THE CHALLENGE
Create a function that takes an array and determines whether it's strictly increasing, strictly decreasing, or neither.
Please notice that I use print in the code instead of console.log to show the result in my built-in console below. However, you should use console.log to
show the result in your normal console
THE CODE
// WEEK 5 → DAY 2 dont publish nadeem
// Strictly Increasing or Decreasing
function check(arr) {
if (new Set(arr).size !== arr.length) {
return 'neither';
} else if (arr[1] > arr[0]) {
return 'increasing';
} else {
return 'decreasing';
}
};
print(check([1, 2, 3, 4, 5]));
print(check([5, 4, 3, 2, 1]));
print(check([1, 2, 2, 4, 5]));
THE EXECUTION RESULT