6: Check if an array is sorted.

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Steps to solve:-

for Checking if an array is sorted, you can follow these steps:-
1. Input:- The code first takes an integer n as input, representing the number of elements in the array.
2. Array input:- It then takes input for an array of integers arr with n elements using a for loop.
3. Assumption:-The code initializes a boolean variable isSorted to true, assuming that the array is sorted initially.
4. Array Traversal:- The code uses another for loop to iterate through the elements of the array from the first element (index 0) to the second-to-last element (index n - 2). The purpose of this loop is to compare adjacent elements to check if they are in non-decreasing order. If arr[i] is greater than arr[i + 1], it means the array is not sorted in non-decreasing order. In this case, isSorted is set to false, and the loop breaks because there is no need to continue checking the remaining elements.
5. Output:- After the loop, the code checks the value of isSorted. If it remains true after the loop, it means the array is sorted in non-decreasing order, and it outputs "YES." Otherwise, it outputs "NO."