Leetcode: Reverse Integer
2013-12-17 23:00
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Reverse digits of an integer.
Example1: x = 123, return 321
Example2: x = -123, return -321
class Solution {
public:
int reverse(int x) {
bool negative = false;
if (x < 0) {
x = -x;
negative = true;
}
int result = 0;
while (x != 0) {
result = result * 10 + x % 10;
x = x / 10;
}
if (negative) {
result = -result;
}
return result;
}
};
Example1: x = 123, return 321
Example2: x = -123, return -321
class Solution {
public:
int reverse(int x) {
bool negative = false;
if (x < 0) {
x = -x;
negative = true;
}
int result = 0;
while (x != 0) {
result = result * 10 + x % 10;
x = x / 10;
}
if (negative) {
result = -result;
}
return result;
}
};
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