Category: All

https://www.hackerrank.com/domains/tutorials/30-days-of-code
Felt like there’s a better way to do this, but this was my take.

Problem was to choose how many words to read, and then output even and odd characters in the format below.
Sample Input

2
Hacker
Rank

Sample Output

Hce akr
Rn ak

        int inputNumber = Convert.ToInt32(Console.ReadLine());

        for (int i = 0; i < inputNumber; i++)
        {
            string s = Console.ReadLine();

            for (int x = 0; x < s.Length; x += 2)
            {
                char evenChar = s[x];
                Console.Write(evenChar);
            }
            Console.Write(" ");

            for (int x = 1; x < s.Length; x += 2)
            {
                char oddChar = s[x];
                Console.Write(oddChar);
            }
            Console.WriteLine();
        }

https://www.hackerrank.com/domains/tutorials/30-days-of-code
No key notes for today’s code.

Achieve output below:
2 x 1 = 2
2 x 2 = 4
2 x 3 = 6
2 x 4 = 8
2 x 5 = 10
2 x 6 = 12
2 x 7 = 14
2 x 8 = 16
2 x 9 = 18
2 x 10 = 20

class Solution
{
    public static void Main(string[] args)
    {
        int n = Convert.ToInt32(Console.ReadLine().Trim());

        for (int i = 1; i <= 10; i++)
        {
            Console.WriteLine(n + " x " + i + " = " + (n * i));
        }
    }
}

https://www.hackerrank.com/domains/tutorials/30-days-of-code
No key notes for today’s code.

class Person {
    public int age;     
	public Person(int initialAge) {
        // Add some more code to run some checks on initialAge
        if (initialAge >= 0){
            age = initialAge;
        }
        else {
            age = 0;
            Console.WriteLine("Age is not valid, setting age to 0.");
        }
     }
     public void amIOld() {
        // Do some computations in here and print out the correct statement to the console 
        if (age < 13){
            Console.WriteLine("You are young.");
        }
        else if (age >= 13 && age < 18){
            Console.WriteLine("You are a teenager.");
        }
        else {
            Console.WriteLine("You are old.");
        }
     }

     public void yearPasses() {
        // Increment the age of the person in here
        age++;
     }
}

https://www.hackerrank.com/domains/tutorials/30-days-of-code

No key notes to add for Day 3.

int N = Convert.ToInt32(Console.ReadLine().Trim());

bool _isOdd;

_isOdd = N % 2 != 0;

if (_isOdd)
{
    Console.WriteLine("Weird");
}

if (!_isOdd && N is >= 2 and <= 5)
{
    Console.WriteLine("Not Weird");
}

if (!_isOdd && N is >= 6 and <= 20)
{
    Console.WriteLine("Weird");
}

if (!_isOdd && N > 20)
{
    Console.WriteLine("Not Weird");
}

https://www.hackerrank.com/domains/tutorials/30-days-of-code

Today’s code challenge was to come up with the solve function, in order to output the total cost of a meal including the tax and tip.

tip_percent and tax_percet are integers, but no need to convert to a Double?
By dividing the value by 100.0, we are using “Implicit Type Conversion“

class Result
{

    /*
     * Complete the 'solve' function below.
     *
     * The function accepts following parameters:
     *  1. DOUBLE meal_cost
     *  2. INTEGER tip_percent
     *  3. INTEGER tax_percent
     */

    public static void solve(double meal_cost, int tip_percent, int tax_percent)
    {
        double tipCost = meal_cost * (tip_percent / 100.0);
        double taxCost = meal_cost * (tax_percent / 100.0);
        double totalCost = meal_cost + tipCost + taxCost;
        Console.WriteLine(Math.Round(totalCost));
    }

}

class Solution
{
    public static void Main(string[] args)
    {
        double meal_cost = Convert.ToDouble(Console.ReadLine().Trim());

        int tip_percent = Convert.ToInt32(Console.ReadLine().Trim());

        int tax_percent = Convert.ToInt32(Console.ReadLine().Trim());

        Result.solve(meal_cost, tip_percent, tax_percent);
    }
}

https://www.hackerrank.com/domains/tutorials/30-days-of-code
Reviewing and brushing up my c# skills via HackerRank's 30 days of code challenge.

int i = 5;
double d = 5.0;
string s = "TestString";

// Read and save an integer, double, and String to your variables.
int intVar = Convert.ToInt32(Console.ReadLine());
double doubleVar = Convert.ToDouble(Console.ReadLine());
string stringVar = Console.ReadLine();

// Print the sum of both integer variables on a new line.
Console.WriteLine(i + intVar);

// Print the sum of the double variables on a new line.
Console.WriteLine((d + doubleVar).ToString("F1"));

// Concatenate and print the String variables on a new line
// The 's' variable above should be printed first.
string concatString = s + stringVar;
Console.WriteLine(concatString);