C# Coding Interview Question - Reverse an Integer | ASP.NET Core | MVC

Published: 27 December 2022
on channel: Code Debugged

228

C# Problem solving interview questions for .NET Developers
How to reverse an integer?
public class Program
{
public static void Main()
{
int input = -203;
int output = reversedigits(input);

Console.WriteLine("Reverse no. is " + output);
Console.ReadLine();
}
static int reversedigits(int num)
{
bool isnegative = false;
if (num lesserthan 0)
{
isnegative = true;
num = -num;
}
int reverse = 0;
while (num greaterthan 0)
{
int remainder = num % 10;// 123 / 10

reverse = (reverse * 10) + remainder;

num = num / 10;//123/10=12.3
}

return (isnegative == true) ? -reverse : reverse;
}

}

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