Next
1. Check if Element Exists2. Count Occurrences3. Find First Occurrence4. Find Last Occurrence5. Check Uniqueness6. Sum of Even Elements7. Sum of Odd Elements8. Count Prime Numbers9. Count Divisible by 3 & 510. Count Perfect Squares

Check Uniqueness

Check if all elements are unique.

IntermediatePhase 4 - Level 2: Searching & Counting LogicExample 5 of 10
check-uniqueness.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 uniqueness
8if len(arr) == len(set(arr)):
9    print("All elements are unique")
10else:
11    print("Array contains duplicate elements")

Output

Enter array size: 5
Element 1: 1
Element 2: 2
Element 3: 3
Element 4: 4
Element 5: 5
All elements are unique

Enter array size: 4
Element 1: 1
Element 2: 2
Element 3: 1
Element 4: 3
Array contains duplicate elements

What's going on

Compare length with set length.

Key Concepts:

set() removes duplicates
If lengths equal, all unique
Otherwise, duplicates exist

🔗Related Content

PreviousFind Last OccurrenceNextSum of Even Elements