Quick Start: Use Go language functions to implement simple data statistics functions

Introduction:
As a simple, efficient and reliable programming language, Go language is widely used in the field of software development. Among them, functions, as one of the core features of the Go language, provide programmers with powerful tools to solve problems. This article will introduce how to use Go language functions to implement simple data statistics functions, helping readers better understand and apply Go language functions.

1. Requirements Analysis
Before starting to write code, we first need to analyze our needs clearly, that is, the problem to be solved. In this article, we need to implement a function that can count the maximum value, minimum value, sum and average value in an integer slice. Next, we will use Go language functions to implement this function.

2. Code Implementation
The following is our code implementation, using a function called "statistics" to complete the task of data statistics:

package main

import "fmt"

func main() {
    // 定義整數(shù)切片
    nums := []int{12, 34, 56, 78, 90}

    // 調(diào)用statistics函數(shù)進(jìn)行數(shù)據(jù)統(tǒng)計(jì)
    maxNum, minNum, sum, avg := statistics(nums)

    // 輸出統(tǒng)計(jì)結(jié)果
    fmt.Println("最大值：", maxNum)
    fmt.Println("最小值：", minNum)
    fmt.Println("總和：", sum)
    fmt.Println("平均值：", avg)
}

func statistics(nums []int) (int, int, int, float64) {
    // 初始化最大值、最小值、總和和平均值
    maxNum := nums[0]
    minNum := nums[0]
    sum := 0

    // 計(jì)算最大值、最小值和總和
    for _, num := range nums {
        if num > maxNum {
            maxNum = num
        }
        if num < minNum {
            minNum = num
        }
        sum += num
    }

    // 計(jì)算平均值
    avg := float64(sum) / float64(len(nums))

    // 返回統(tǒng)計(jì)結(jié)果
    return maxNum, minNum, sum, avg
}

3. Code Analysis
We first define an integer slice to store the data we want to count. We then called a function called "statistics" and passed the integer slice as a parameter to the function. Inside the function, we use four variables to store the statistical results, namely maximum value, minimum value, sum and average. We compare the sizes of elements one by one by iterating over the integer slice and updating the maximum and minimum values. At the same time, we accumulate the value of each element to calculate the sum. Finally, we get the average by dividing the sum by the length of the integer slice. Finally, we return the statistical results as multiple values ??and print the output in the main function.

4. Test run
We can compile and run the above code and get the following output:

最大值： 90
最小值： 12
總和： 270
平均值： 54

5. Summary
This article introduces how to use Go language functions to achieve Simple data statistics function. By implementing a function called "statistics", we can count the maximum, minimum, sum, and average values ??in a slice of integers. By studying this article, readers can better understand and apply the functions of the Go language, which provides a simple and powerful way to solve practical problems. Hope this article helps you!

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