LintCode 第413题 反转整数 【整数】

x = 123

321

#include <iostream>

int reverseInteger(int n){
if (n == 0) {
return 0;
}
int sum = 0;
while ( n!= 0) {
if (abs(sum) > INT_MAX/10) {
return 0;
}
int residue = n%10;
sum = sum*10 + residue;
n = n/10;
}
return sum;
}

int main(int argc, const char * argv[]) {
// insert code here...
std::cout << "Hello, World!\n";
int newValue = reverseInteger(1000000009 );
return 0;
}