LeetCode-CS/LeetCode/0001-0050/007-ReverseInteger.cs at master · ThreeBodySpaceShip/LeetCode-CS · GitHub

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//-----------------------------------------------------------------------------
// Runtime: 40ms
// Memory Usage: 14.6 MB
// Link: https://leetcode.com/submissions/detail/359575927/
//-----------------------------------------------------------------------------

namespace LeetCode
{
    public class _007_ReverseInteger
    {
        public int Reverse(int x)
        {
            var result = 0;

            var positiveOverflow = int.MaxValue / 10;
            var nagativeOverflow = int.MinValue / 10;

            for (; x != 0; x /= 10)
            {
                if (result > positiveOverflow || result < nagativeOverflow)
                {
                    return 0;
                }
                result = result * 10 + x % 10;
            }

            return result;
        }
    }
}