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1. Check if Array is Sorted (Ascending)2. Check if Array is Sorted (Descending)3. Find Second Largest4. Find Second Smallest5. Range (Max - Min)6. Sum Except Max & Min7. Count Pairs with Sum K8. Count Elements Greater Than Average9. Frequency of Distinct Elements10. Unique Elements Only11. Find Kth Largest Element12. Rotate Array by K Positions13. Find Missing Number in Sequence14. Find Duplicate Element

Check if Array is Sorted (Descending)

Check if array is sorted in descending order.

AdvancedPhase 4 - Level 5: Logical & AppliedExample 2 of 14
check-if-array-is-sorted-descending.py
1# Take array
2n = int(input("Enter array size: "))
3arr = []
4for i in range(n):
5    arr.append(int(input(f"Element {i+1}: ")))
6

7# Check sorted descending
8is_sorted = True
9for i in range(len(arr) - 1):
10    if arr[i] < arr[i + 1]:
11        is_sorted = False
12        break
13

14if is_sorted:
15    print("Array is sorted in descending order")
16else:
17    print("Array is not sorted")

Output

Enter array size: 5
Element 1: 9
Element 2: 7
Element 3: 5
Element 4: 3
Element 5: 1
Array is sorted in descending order

What's going on

Check if arr[i] >= arr[i+1] for all i.

Key Concepts:

Compare each element with next
Check descending order
Early exit on violation

🔗Related Content

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