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Create powerOfFour.cpp #154

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Create powerOfFour.cpp #154

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28 changes: 28 additions & 0 deletions C++/powerOfFour.cpp
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Original file line number Diff line number Diff line change
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//Just as the name suggests, when given an integer (signed 32 bits), this piece of code checks whether it is a power of 4 or not.

class Solution {
public:
bool isPowerOfFour(int num) {
if(num==1)
return true;

else{

label:
if(num==0)
return false;

if(num==4)
return true;

else if(num%4==0)

{
num=num/4;
goto label;

}
}
return false;

}