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Compute the Power of a Number

Certification: Basic Level Accuracy: 86.51% Submissions: 126 Points: 5

Write a Python program that calculates x raised to the power of y (x^y).

Example 1
    

  • Input: x = 2, y = 3
    • 

  • Output: 8
    • 

  • Explanation: 

      

    • Step 1: Take base x = 2 and exponent y = 3 as input.
      • 

    • Step 2: Calculate 2^3 = 2 * 2 * 2 = 8.
      • 

    • Step 3: Return 8 as the result.
      • 

    

    •
Example 2
    

  • Input: x = 5, y = -2
    • 

  • Output: 0.04
    • 

  • Explanation: 

      

    • Step 1: Take base x = 5 and exponent y = -2 as input.
      • 

    • Step 2: Calculate 5^(-2) = 1/(5^2) = 1/25 = 0.04.
      • 

    • Step 3: Return 0.04 as the result.
      • 

    

    •
Constraints
    

  • -10^6 ≤ x ≤ 10^6
    • 

  • -10^3 ≤ y ≤ 10^3
    • 

  • Time Complexity: O(log y) for manual implementation
    • 

  • Space Complexity: O(1)
    •
NumberFunctions / MethodsRecursionGoogleTCS (Tata Consultancy Services)
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Hint
Solution

Solution Hints

    
  
  • Use the exponentiation operator: result = x ** y
    • 
  
  • Use math.pow(): import math; result = math.pow(x, y)
    • 
  
  • Implement binary exponentiation for more efficient manual calculation
    • 
  
  • Use recursion for manual implementation
    •

The following are the steps to compute the power of a number:

  •  Take two inputs: base and exponent.  

  •  Use the `**` operator or the `pow()` function.  

  •  Store the result.  

  •  Print the computed power.  

  •  Test with values like `2^3 = 8`.

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