
using Xunit;
namespace ConsoleApp {
    public class ProgramTests {
        [Fact(DisplayName = "ReverseWords reverses a normal sentence correctly")]
        public void ReverseWords_ReversesNormalSentence()
        {
            string input = "Loops make code powerful";
            string expected = "powerful code make Loops";
            Assert.Equal(expected, Program.ReverseWords(input));
        }

        [Fact(DisplayName = "ReverseWords returns same word for a single-word sentence")]
        public void ReverseWords_SingleWord()
        {
            string input = "Hello";
            string expected = "Hello";
            Assert.Equal(expected, Program.ReverseWords(input));
        }

        [Fact(DisplayName = "ReverseWords returns empty string for empty input")]
        public void ReverseWords_EmptyString()
        {
            string input = "";
            string expected = "";
            Assert.Equal(expected, Program.ReverseWords(input));
        }

        [Fact(DisplayName = "ReverseWords preserves single spacing between words")]
        public void ReverseWords_PreservesSingleSpacing()
        {
            string input = "a b c d";
            string expected = "d c b a";
            Assert.Equal(expected, Program.ReverseWords(input));
        }
    }
}

ProgramTests.cs

Deepen your understanding of C# loops with a hands-on, challenge-driven course. Explore for, while, and do-while loops, master nested structures, generate patterns, and tackle real-world problems. Each section alternates between engaging theory and practical coding challenges to ensure you build both conceptual understanding and practical fluency.

Explore the full power of for loops in C#, from basic counting to custom steps and real-world data processing.

Master while and do-while loops for scenarios where the number of iterations isn't known in advance, and learn to control loop execution with conditions.

Delve into advanced looping techniques, including nested loops for pattern generation, loop transformations, efficiency, and avoiding common mistakes.

Challenge: Reverse Words in a Sentence

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