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In C#, use readonly to declare a const array.public static readonly string[] a = { "Car", "Motorbike", "Cab" };In readonly, you can set the value at runtime as well unlike const.Another alternative of achieving what we saw above −public ReadOnlyCollection a { get { return new List { "Car", "Motorbike", "Cab" }.AsReadOnly();}} .NET framework 4.5 brings an improvement to what we saw −public ReadOnlyCollection a { get; } = new ReadOnlyCollection( new string[] { "Car", "Motorbike", "Cab" } );
Let’s say our string is −string str = "abcd$ef$gh";To replace the special character, use the Replace() method.string res = str.Replace('$', 'k');The following is the complete code to replace character from a string −Example Live Demousing System; public class Program { public static void Main() { string str = "abcd$ef$gh"; Console.WriteLine("Initial string = " + str); string res = str.Replace('$', 'k'); // after replacing Console.WriteLine("Replaced string = " + res.ToString()); } }OutputInitial string = abcd$ef$gh Replaced string = abcdkefkgh
Use the Replace() method to replace a character with asterisks.Let’s say our string is −string str = "dem* text";To replace it, use the Replace() method −str.Replace('*', 'o');Here is the complete code −Example Live Demousing System; public class Program { public static void Main() { string str = "dem* text"; Console.WriteLine("Initial string = " + str); string res = str.Replace('*', 'o'); // after replacing Console.WriteLine("After replacing asterisk = " + res.ToString()); } }OutputInitial string = dem* text After replacing asterisk = demo text
The following is our integer array −int[] myArr = new int[6] { 8, 4, 2, 5, 9, 14 };Firstly, get the length of the array, and loop through the array to find the sum of the elements. After that, divide it with the length.int len = myArr.Length; int sum = 0; int average = 0; for (int i = 0; i < len; i++) { sum += myArr[i]; } average = sum / len;Here is the complete codeExample Live Demousing System; public class Program { public static void Main() { ... Read More
To get the first 10 characters, use the substring() method.Let’s say the following is our string −string str = "Cricket is a religion in India!";Now to get the first 10 characters, set the value 10 in the substring() method as shown below −string res = str.Substring(0, 10);Let us see the complete code.Example Live Demousing System; public class Demo { public static void Main() { string str = "Cricket is a religion in India!"; string res = str.Substring(0, 10); Console.WriteLine(res); } }OutputCricket is
To find the average values, firstly set an arrayLint[] myArr = new int[10] { 45, 23, 55, 15, 8, 4, 2, 5, 9, 14 };Now find the sum and divide it by the length of the array to get the average.int len = myArr.Length; int sum = 0; int average = 0; for (int i = 0; i < len; i++) { sum += myArr[i]; average = sum / len; }Let us see the complete code −Exampleusing System; public class Program { public static void Main() { int[] myArr = new int[10] { 45, 23, 55, 15, 8, 4, 2, 5, 9, 14 }; int len = myArr.Length; int sum = 0; int average = 0; for (int i = 0; i < len; i++) { sum += myArr[i]; } average = sum / len; Console.WriteLine("Sum = " + sum); Console.WriteLine("Average Of integer elements = " + average); } }
To get the sum of digits using recursion, set a method in C# that calculates the sum.static int sum(int n) { if (n != 0) { return (n % 10 + sum(n / 10)); } else { return 0; }The above method returns the sum and checks it until the entered number is not equal to 0.The recursive call returns the sum of digits o every recursive call −return (n % 10 + sum(n / 10));Let us see the complete code −Example Live Demousing System; class Demo { public static void ... Read More
To find the product of two binary numbers, firstly set them.val1 = 11100; val2 = 10001; Console.WriteLine("Binary one: "+val1); Console.WriteLine("Binary two: "+val2);Now loop through to get the product.while (val2 != 0) { digit = val2 % 10; if (digit == 1) { val1 = val1 * factor; prod = displayMul(val1, prod); } else val1 = val1 * factor; val2 = val2 / 10; factor = 10; } Console.WriteLine("Product = {0}", prod);Above a method displayMul() is called with the first binary number.static long displayMul (long val1, long val2) ... Read More
First, declare and initialize two variables with the binary numbers.val1 = 11010; val2 = 10100; Console.WriteLine("Binary one: " + val1); Console.WriteLine("Binary two: " + val2);To get the sum, loop until both the value are 0.while (val1 != 0 || val2 != 0) { sum[i++] = (val1 % 10 + val2 % 10 + rem) % 2; rem = (val1 % 10 + val2 % 10 + rem) / 2; val1 = val1 / 10; val2 = val2 / 10; }Now, let us see the complete code to find the sum of two binary numbers.Example Live Demousing ... Read More
Using Synchronization, you can synchronize access to resources in multithreaded applications.A mutex can be used to synchronize threads across processes Use it to prevent the simultaneous execution of a block of code by more than one thread at a time.C# lock statement is used to ensure that a block of code runs without interruption by other threads. A Mutual-exclusion lock is obtained for a given object for the duration of the code block.Thread pool in C# is a collection of threads. It is used to perform tasks in the background. When a thread completes a task, it is sent to ... Read More