How to Use Recursion to Create a Range of Numbers in JavaScript

Recursion is a powerful programming technique that allows us to solve problems in a more efficient manner. It is especially useful when dealing with large or complex data sets. In this tutorial, we will learn how to use recursion to create a range of numbers in JavaScript.

What is Recursion?

Recursion is a technique where a function calls itself repeatedly until a certain condition is met. This is useful when dealing with large or complex data sets as it allows us to break down the problem into smaller, more manageable pieces. For example, if we wanted to calculate the sum of all the numbers between 1 and 10, we could use recursion to solve this problem.

Creating a Range of Numbers Using Recursion

We can use recursion to create a range of numbers in JavaScript. This can be done by creating a function that takes two parameters: the start and end values. The function will then call itself with the next value in the range until it reaches the end value. To make this more efficient, we will also use a local variable to store the current value. This way, we don’t have to keep passing the same value to the function each time.

Example

Let’s look at an example of how to create a range of numbers using recursion. In this example, we will create a function that takes two parameters: the start and end values. The function will then call itself with the next value in the range until it reaches the end value. We will also use a local variable to store the current value.

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// Function to create a range of numbers
function createRange(start, end) {
  // Store the current value
  let current = start;

  // Base case (stop when the current value reaches the end value)
  if (current > end) {
    return;
  }

  // Print the current value
  console.log(current);

  // Increment the current value
  current++;

  // Call the function again with the updated value
  createRange(current, end);
}

// Create a range of numbers from 1 to 10
createRange(1, 10);

// Output: 1 2 3 4 5 6 7 8 9 10

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In this example, we have defined a function called ‘createRange’ which takes two parameters: the start and end values. We have then used a local variable to store the current value. The function prints the current value and then increments it by one before calling itself again with the updated value. This continues until the current value reaches the end value, at which point the function returns.

Conclusion

In this tutorial, we have looked at how to use recursion to create a range of numbers in JavaScript. We have seen how to create a function that takes two parameters, the start and end values, and then uses a local variable to store the current value. The function prints the current value and then increments it by one before calling itself again with the updated value. This continues until the current value reaches the end value, at which point the function returns. This technique is useful for dealing with large or complex data sets as it allows us to break down the problem into smaller, more manageable pieces.