问将整数切片追加到整数切片的切片会修改要追加的切片

EN

var myGraph [8][8]bool //the graph

var visited [8]bool //an array that marks if visited

var path []int //a slice to store a possible path

var paths [][]int

func dfs(src int, dest int) {
    //add current node to path
    path = append(path, src)

    //mark current node as visited
    visited[src] = true

    //if the current node is the destination
    //print the path and return
    if src == dest {
        // (A)
        buffer := make([]int, len(path))
        copy(buffer, path)

        fmt.Println(buffer)
        paths = append(paths, buffer) //I'm trying to push the path slice into the paths slice

        // fmt.Println(path)
        // paths = append(paths, path) //I'm trying to push the path slice into the paths slice
        return
    }

    for i := 1; i <= 7; i++ { //loop through all nodes

        //if ith node is a neighbour of the current node and it is not visited
        if myGraph[src][i] && visited[i] == false {

            // call dfs on the current node
            dfs(i, dest)

            //mark the current node as unvisited
            //so that we can other paths to the final destination
            visited[i] = false

            //re-slice the slice - get rid of the current node
            path = path[:len(path)-1]
        }

    }

}

func main1() {
    // path = make([]int, 0, 8)
    // paths = make([][]int, 0, 10)

    //creating the graph
    myGraph[1] = [...]bool{false, false, true, true, false, false, true, false}
    myGraph[2] = [...]bool{false, true, false, true, false, true, false, false}
    myGraph[3] = [...]bool{false, true, true, false, true, false, true, false}
    myGraph[4] = [...]bool{false, false, false, true, false, false, true, false}
    myGraph[5] = [...]bool{false, false, true, false, false, false, true, false}
    myGraph[6] = [...]bool{false, true, false, true, true, false, false, true}
    myGraph[7] = [...]bool{false, false, false, false, false, false, true, false}

    //call dfs by feeding in the source and the destination
    dfs(1, 7)
    fmt.Println(paths)
}