fix(array and linkedlist): fix that the printing in the test function is the same as that in other languages

codes/go/chapter_array_and_linkedlist/array.go

@@ -9,10 +9,6 @@ import (
 	"math/rand"
 )
 
-/* 初始化数组 */
-var arr = [5]int{}
-var nums = []int{1, 3, 2, 5, 4}
-
 /* 随机返回一个数组元素 */
 func randomAccess(nums []int) int {
 	randomIndex := rand.Intn(len(nums))
@@ -33,9 +29,9 @@ func extend(nums []int, enlarge int) []int {
 }
 
 /* 在数组的索引 index 处插入元素 num */
-func insert(nums []int, size int, num int, index int) {
+func insert(nums []int, num int, index int) {
 	// 把索引 index 以及之后的所有元素向后移动一位
-	for i := size - 1; i > index; i-- {
+	for i := len(nums) - 1; i > index; i-- {
 		nums[i] = nums[i-1]
 	}
 	// 将 num 赋给 index 处元素
@@ -43,9 +39,9 @@ func insert(nums []int, size int, num int, index int) {
 }
 
 /* 删除索引 index 处元素 */
-func remove(nums []int, size int, index int) {
+func remove(nums []int, index int) {
 	// 把索引 index 之后的所有元素向前移动一位
-	for i := index; i < size-1; i++ {
+	for i := index; i < len(nums)-1; i++ {
 		nums[i] = nums[i+1]
 	}
 }