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Pow(x, n)
Implement pow(x, n), which calculates x raised to the power n (i.e., xn).
Implement pow(x, n), which calculates x raised to the power n (i.e., xn).
Example 1
Input: x = 2.00000, n = 10
Output: 1024.00000
Example 2
Input: x = 2.10000, n = 3
Output: 9.26100
Example 3
Input: x = 2.00000, n = -2
Output: 0.25000
Explanation: 2-2 = 1/22 = 1/4 = 0.25
Constraints
- -100.0 < x < 100.0
- -231 <= n <= 231-1
- n is an integer.
- Either x is not zero or n > 0.
- -10^4 <= xn <= 10^4
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