本文实例讲述了Go语言算法之寻找数组第二大元素的方法。分享给大家供大家参考。具体如下：
该算法的原理是，在遍历数组的时，始终记录当前最大的元素和第二大的元素。示例代码如下：
复制代码 代码如下:
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
}
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
}
希望本文所述对大家的Go语言程序设计有所帮助。
