0007

Solution for problem 0007

Project initialized using dotnet core CLI:

dotnet new console

Original problem : Reverse Integer https://leetcode.com/problems/reverse-integer

Given a 32-bit signed integer, reverse digits of an integer.

Example 1 :

Input: 123
Output: 321

Example 2 :

Input: -123
Output: -321

Example 3 :

Input: 120
Output: 21

Brute force accepted solution

        public static int reverse(int input)
        {
            try
            {
                char[] inputArray;
                if (input > 0)
                {
                    inputArray = input.ToString().ToCharArray();
                    Array.Reverse(inputArray);
                    Console.WriteLine(new string(inputArray));
                    return Int32.Parse(new string(inputArray));
                }
                else
                {
                    inputArray = input.ToString().Substring(1).ToCharArray();
                    Array.Reverse(inputArray);
                    return (-1 * Int32.Parse(new string(inputArray)));
                }
            }
            catch { return 0; }
        }