Shift String

using System;
using System.Diagnostics;

namespace ShiftString
{
    class Program
    {
        struct Data
        {
            public int leftShift { get; set; }
            public int rightShift { get; set; }
            public string value { get; set; }
        };

        static Data GetTestSample()
            => new Data()
            {
                leftShift = 1,
                rightShift = 2,
                value = "abcd"
            };
        static Data GetTestSample2()
            => new Data()
            {
                leftShift = 99999998,
                rightShift = 1000000000,
                value = "gscelpbobqbzzvzjckhmsimayykyylrmdyoumdqvobcnorruyhsgbtjfyrxnlohmkbpghoqqkfucyldioakhiqobsukeuhznppxtqxozywgvsierwaxdsfxqgzkaampiuhyoqfjfeycemstyxskrxijfreoztsxoialrihwbqldfztalcdzfhcfskmmskjmothkgcmhzfoxovlhxggcpymumbshygftuhhcmkqroaalxyrywhijujkezgodwisgcvyckndevbnhqlzwjcqkletilwwegrquotfxslxgggxtixbeuedcnaiwwpgzherfwblyhxnogejhwellluwrpoqagpwvgvbghtshwxixhhbujganqhphoxvqqeeyenxfjfinephwcdeoumoxtdygpxvyxsczmfmmrckonjtryedvatewrniwkoewjymxquudueohoycfauzpcswkczexdtnbplgovlemibeppilgklljqtfyvmedlxdpgbdmpjkfnypzfqpaiewhghqaatjqjimwohfbfficamlskijuiaskemwmowmwlpppchaiikzgtesocmgielosaefijndgooqvbqkwthbimlceqdvdnvrtrhuzzpaxdtzjmlavvyhixkxkniagllxkxudcfqkgxlxciebfejlmwejfcppxnbuqcsfwuufrrqemovhydxxreqtjzodtjkhnmljkuobjahlxwufngokfhsemjdwrduujioyffrtibxkaauumpyvciwwjxlnjnflbjniowwjxzxbukrhozntmtxyrmilqjyhtgakqgloiyhjnpcriqkzkjlrqhxgjffianyhnzybvnsqdkutbaxhyvuumgkqbwatvayczvqmkvuiuasqgxqpwbpabfeehvxkbvqgjfuqyooivrodxiyrrtzwzlmoowmshiyjbdquplitqpaqlzdvafzyjbjzymaplsbtaylqpymyluiezesitvpzmgkyki"
            };

        static Data GetTestSample3()
            => new Data()
            {
                rightShift = 99999998,
                leftShift= 1000000000,
                value = "gscelpbobqbzzvzjckhmsimayykyylrmdyoumdqvobcnorruyhsgbtjfyrxnlohmkbpghoqqkfucyldioakhiqobsukeuhznppxtqxozywgvsierwaxdsfxqgzkaampiuhyoqfjfeycemstyxskrxijfreoztsxoialrihwbqldfztalcdzfhcfskmmskjmothkgcmhzfoxovlhxggcpymumbshygftuhhcmkqroaalxyrywhijujkezgodwisgcvyckndevbnhqlzwjcqkletilwwegrquotfxslxgggxtixbeuedcnaiwwpgzherfwblyhxnogejhwellluwrpoqagpwvgvbghtshwxixhhbujganqhphoxvqqeeyenxfjfinephwcdeoumoxtdygpxvyxsczmfmmrckonjtryedvatewrniwkoewjymxquudueohoycfauzpcswkczexdtnbplgovlemibeppilgklljqtfyvmedlxdpgbdmpjkfnypzfqpaiewhghqaatjqjimwohfbfficamlskijuiaskemwmowmwlpppchaiikzgtesocmgielosaefijndgooqvbqkwthbimlceqdvdnvrtrhuzzpaxdtzjmlavvyhixkxkniagllxkxudcfqkgxlxciebfejlmwejfcppxnbuqcsfwuufrrqemovhydxxreqtjzodtjkhnmljkuobjahlxwufngokfhsemjdwrduujioyffrtibxkaauumpyvciwwjxlnjnflbjniowwjxzxbukrhozntmtxyrmilqjyhtgakqgloiyhjnpcriqkzkjlrqhxgjffianyhnzybvnsqdkutbaxhyvuumgkqbwatvayczvqmkvuiuasqgxqpwbpabfeehvxkbvqgjfuqyooivrodxiyrrtzwzlmoowmshiyjbdquplitqpaqlzdvafzyjbjzymaplsbtaylqpymyluiezesitvpzmgkyki"
            };
        static void Main(string[] _)
        {
            var input = GetTestSample3();
            int leftShift = input.leftShift;
            int rightShift = input.rightShift;
            string value = input.value;
            /* Expected input : abcd
             * Expected output: dabc
             * -> _ _ _ _
             *    _ a _ _
             *    _ a b _
             *    _ a b c
             *    d a b c
             */
            var stopWatch = new Stopwatch();
            stopWatch.Start();
            var output = ShiftString(value, leftShift, rightShift);
            stopWatch.Stop();
            Console.Write("Input: ");
            Console.WriteLine(value);
            Console.Write("Output: ");
            Console.WriteLine(output);
            Console.WriteLine($"Took {stopWatch.ElapsedMilliseconds}ms OR {stopWatch.ElapsedTicks} ticks");
            Console.ReadKey();

        }

        public static char[] ShiftString(string text, int leftShift, int rightShift)
        {
            var length = text.Length;
            int offset = rightShift - leftShift;
            if (offset < 0 )
            {
                offset = length + (offset % length);
            }
            else if(offset > length)
            {
                offset = offset % length;
            }
            var shiftedText = new char[length];
            int newOffset;
            for (int i = 0;
                 i < length;
                 i++)
            {
                newOffset = i + offset;
                if (newOffset >= length)
                {
                    newOffset -= length;
                }
                shiftedText[newOffset] = text[i];
            }
            return shiftedText;
        }
    }
}

The goal from this gist is to shift the position of the character by walking towards the text.