In this paper, an example of the Go language algorithm is presented to find the second element of an array. Share with you for your reference. The details are as follows:

The principle of this algorithm is that when traversing groups, the current largest element and the second largest element are always recorded. The sample code is as follows:

package demo01 
 
import ( 
    "fmt" 
) 
 
func NumberTestBase() { 
    fmt.Println("This is NumberTestBase") 
 
    nums := []int{12, 24, 2, 5, 13, 8, 7} 
    fmt.Println("nums:", nums) 
    secondMax := getSecondMaxNum(nums) 
    fmt.Println("secondMax=", secondMax) 
} 
 
func getSecondMaxNum(nums []int) int { 
    length := len(nums) 
    if length == 0 { 
        panic("Slice nums cannot be 0-size.") 
    } 
 
    if length == 1 { 
        return nums[0] 
    } 
 
    var max, secondMax int 
    if nums[0] > nums[1] { 
        max = nums[0] 
        secondMax = nums[1] 
    } else { 
        max = nums[1] 
        secondMax = nums[0] 
    } 
 
    for i := 2; i < len(nums); i++ { 
        if nums[i] > secondMax { 
            if nums[i] <= max { 
                secondMax = nums[i] 
            } else { 
                secondMax, max = max, nums[i] 
            } 
        } 
    } 
    return secondMax 
}

I hope this article has been helpful to your programming of Go language.