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Fastest solution #138

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Fastest solution
Nimesh-Srivastava Aug 27, 2021
9ec8b1f
Update reverse-integer.cpp
Nimesh-Srivastava Aug 27, 2021
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19 changes: 19 additions & 0 deletions C++/reverse-integer.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -21,3 +21,22 @@ class Solution {
return result;
}
};


//Time : O(1)
class Solution2 {
public:
int reverse(int x) {
long long ans = 0;

if(x/10 == 0)
return x;

while(x){
ans = ans*10 + x%10;
x = x/10;
}

return (ans > INT_MAX || ans < INT_MIN) ? 0 : ans;
}
};