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LeetCode-Solutions/C++/reverse-integer.cpp at master · pythonpeixun/LeetCode-Solutions · GitHub
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LeetCode-Solutions
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C++
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reverse-integer.cpp
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reverse-integer.cpp
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//
Time: O(logn) = O(1)
//
Space: O(1)
class
Solution
{
public:
int
reverse
(
int
x) {
int
result =
0
;
while
(x) {
auto
prev = result;
result *=
10
;
result += x %
10
;
if
(result /
10
!= prev) {
result =
0
;
break
;
}
x /=
10
;
}
return
result;
}
};
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