Pow(x, n) | Mingzhe Du

mplement pow(x, n), which calculates x raised to the power n (xⁿ).

Example 1:

**Input:** 2.00000, 10
**Output:** 1024.00000

Example 2:

**Input:** 2.10000, 3
**Output:** 9.26100

Example 3:

**Input:** 2.00000, -2
**Output:** 0.25000
**Explanation:** 2<sup>-2</sup> = 1/2<sup>2</sup> = 1/4 = 0.25

Note:

-100.0 < x < 100.0- n is a 32-bit signed integer, within the range [−2³¹, 2³¹− 1]

class Solution:
    def myPow(self, x: float, n: int) -> float:
        if n == 0:
            return 1
        
        if n < 0:
            return 1 / self.myPow(x, -n)
        
        if n % 2:
            return x * self.myPow(x, n-1)
        
        return self.myPow(x*x, n/2)

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