class Solution {
public:
int reverse(int x) {
if(x == 0 || x == INT_MIN) {
return 0;
}
int remainder = 0;
int y = abs(x);
queue<int> number;
while(y) {
remainder = y % 10;
number.push(remainder);
y /= 10;
}
int result = 0;
while(!number.empty()) {
if((INT_MAX - number.front()) / 10 < result) {
return 0;
}
result = result * 10 number.front();
number.pop();
}
return x == abs(x)?result:-result;
}
};
One loop
代码语言：javascript复制
class Solution {
public:
int reverse(int x) {
if(x == 0 || x == INT_MIN) {
return 0;
}
int y = abs(x);
int result = 0;
int remainder = 0;
while(y) {
remainder = y % 10;
if((INT_MAX - remainder) / 10 < result) {
return 0;
}
result = result * 10 remainder;
y /= 10;
}
return x == abs(x)?result:-result;
}
};
