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public class {
public double myPow(double x, int n) {
if (n == 0)
return 1;
if (n < 0) {
if (n == Integer.MIN_VALUE) {
n++;
x = 1 / x;
n = -n;
return x * x * myPow(x * x, n / 2);
}
x = 1 / x;
n = -n;
}
if (n % 2 == 0) {
return myPow(x * x, n / 2);
} else {
return myPow(x * x, n / 2) * x;
}
}
}
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