LeetCode : Reverse Integer
2012-12-06 13:40
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Reverse digits of an integer.
Example1: x = 123, return 321
Example2: x = -123, return -321
Example1: x = 123, return 321
Example2: x = -123, return -321
class Solution { public: int reverse(int x) { // Start typing your C/C++ solution below // DO NOT write int main() function int res = 0; int n = abs(x); while(n){ int last = n % 10; n /=10; res = res *10 + last; } if(x < 0){ res *=-1; } return res; } };
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