String Repeating and Concatenation N Times | Programming

String repeating and concatenation N times are common tasks in programming. In order to repeat a string N times, we can use a loop and concatenate the string to itself in each iteration. For example, if we want to repeat the string "hello" 3 times, we can use the following code:


string repeatedString = "";
string originalString = "hello";
int n = 3;

for (int i = 0; i < n; i++) {
  repeatedString += originalString;
}

// repeatedString now contains "hellohellohello"

Alternatively, we can use a built-in function to repeat a string N times. In C#, we can use the string.Repeat() method. For example:


string repeatedString = string.Repeat("hello", 3);

// repeatedString now contains "hellohellohello"

Both methods are valid and the choice depends on personal preference and the specific requirements of the program.

When concatenating strings, we can use the + operator or the string.Concat() method. It is important to note that when concatenating strings in a loop, it is more efficient to use the string.Concat() method, as it creates fewer temporary objects. For example:


string concatenatedString = "";
string[] stringsToConcatenate = {"hello", "world", "!"};

for (int i = 0; i < stringsToConcatenate.Length; i++) {
  concatenatedString = string.Concat(concatenatedString, stringsToConcatenate[i]);
}

// concatenatedString now contains "helloworld!"

In summary, to repeat a string N times, we can use a loop or the string.Repeat() method. When concatenating strings, it is more efficient to use the string.Concat() method in a loop.

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