Topic
1. Check if All Digits are Distinct2. Check Middle Digit3. Check First and Last Digits Equal4. Check Digit Count Type5. Multiple of 7 or Ends with 76. Determine Quadrant7. Currency Division Check8. Check if Number in Range9. Calculate Third Angle10. Check Perfect Square

Check Perfect Square

Check whether a number is a perfect square (without using the square root function).

IntermediatePhase 1 - Level 3: Math and Number LogicExample 10 of 10
check-perfect-square.py
1# Take number
2num = int(input("Enter a number: "))
3

4# Check if perfect square
5is_perfect_square = False
6for i in range(1, num + 1):
7    if i * i == num:
8        is_perfect_square = True
9        break
10    if i * i > num:
11        break
12

13if is_perfect_square:
14    print("Perfect square")
15else:
16    print("Not a perfect square")

Output

Enter a number: 16
Perfect square

Enter a number: 15
Not a perfect square

What's going on

Check if any number squared equals the input.

Key Concepts:

Loop through numbers from 1 to num
Check if i * i == num
Stop early if i * i > num (optimization)

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