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<p>package main</p>
<p>import (<br> "fmt"<br>
)</p>
<p>func main() {<br> arr1 := []int{32, 57, 35, 22}<br> arr2 := []int{32, 57, 35, 22}</p>
<p> arr1 = append(arr1, 0) // Making space for the new element<br> copy(arr1[3:], arr1[2:]) // Shifting elements<br> arr1[2] = 99 // Copying/inserting the value</p>
<p> fmt.Println(arr1) // Printing Result<br> <br> arr2 = append(arr2, 0) // Making space for the new element<br> insert(arr2, 99, 2) // Another way to do it<br> <br> fmt.Println(arr2) // Same result<br>
}</p>
<p>func insert(array []int, element int, i int) []int {<br> return append(array[:i], append([]int{element}, array[i:]...)...)<br>
}</p>
<p>
append(s S, x ...T) S // T is the element type of S</p><p>s0 := []int{0, 0}<br>s1 := append(s0, 2) // append a single element s1 == []int{0, 0, 2}<br>s2 := append(s1, 3, 5, 7) // append multiple elements s2 == []int{0, 0, 2, 3, 5, 7}<br>s3 := append(s2, s0...) // append a slice s3 == []int{0, 0, 2, 3, 5, 7, 0, 0}</p>
