Golang 如何创建一个简单的递归函数

在本教程中，我们将看到如何使用算法和示例来编写一个简单的递归函数。在第一个示例中，我们将按升序打印从1到N的数字，而在另一个示例中，我们将按降序打印从1到N的数字。

从编程角度来看，如果我们在同一个函数中调用该函数并具有基本条件，则该函数是一个递归函数。当基本条件满足时，停止调用函数，并开始回滚到调用函数的上一个步骤。

语法

func functionName(arguments) returnType {

   // Base condition
   // Function calling according to the logic
}

示例1

在这个示例中，我们将看到在Golang中用递归函数按升序打印前10个数字。

package main
import (

   // fmt package provides the function to print anything
   "fmt"
)
func printAscendingOrder(number int) {

   // base condition of the function whenever the number becomes zero the function calls will stop
   if number == 0 {
      return
   }

   // calling the function within the function to make it recursive also, passing the number one lesser than the current value
   printAscendingOrder(number - 1)

   // printing the value of the number in
   // the current function calling the state
   fmt.Printf("%d ", number)
}
func main() {

   // declaring the variable
   var number int

   // initializing the variable
   number = 10
   fmt.Println("Golang program to print the number in ascending order with the help of a simple recursive function.")

   // calling the recursive function
   printAscendingOrder(number)
   fmt.Println()
}

输出

Golang program to print the number in ascending order with the help of a simple recursive function.
1 2 3 4 5 6 7 8 9 10

示例2

在这个示例中，我们将看到在Golang中以递归方式打印前10个数以降序排列的函数。

package main
import (

   // fmt package provides the function to print anything
   "fmt"
)
func printDescendingOrder(number int) {

   // base condition of the function whenever the number becomes zero the function calls will stop
   if number == 0 {
      return
   }

   // printing the value of the number in the current function calling the state
   fmt.Printf("%d ", number)

   // calling the function within the function to make it recursive also, passing the number one lesser than the current value
   printDescendingOrder(number - 1)
}
func main() {

   // declaring the variable
   var number int

   // initializing the variable
   number = 10
   fmt.Println("Golang program to print the number in descending order with the help of a simple recursive function.")

   // calling the recursive function
   printDescendingOrder(number)
   fmt.Println()
}

输出

Golang program to print the number in descending order with the help of a simple recursive function.
10 9 8 7 6 5 4 3 2 1

结论

这是在Golang中创建简单递归函数的方法，其中包含两个示例，我们按升序和降序打印了从1到N的数字。要了解更多关于Golang的内容，可以查看这些教程。