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class Solution {

public double myPow(double x, int n) {

int flag = 0;

if(n==0)

{

return 1;

}

else if(n<0){

n=-n;

flag=1;

}

double result = PowCorn(x,n);

if(flag==1)

{

result = 1/result;

}

return result;

}

public double PowCorn(double x,int n)

{

if(n==0)

{

return 1;

}

double a = PowCorn(x,n/2);

if(n%2==0)

{

return a*a;

}

else

{

return a*a*x;

}

}

}