leetcode_797

Golang:

思路：DFS

代码如下：

func allPathsSourceTarget(graph [][]int) [][]int {
    var res [][]int
    path:=[]int{0}
    dfs797(graph,&path,&res)
    return res
}
func dfs797(graph [][]int,path *[]int,res *[][]int){
    temp:=(*path)[len(*path)-1]
    if temp==len(graph)-1{
        cpy:=make([]int,len(*path))
        copy(cpy,*path)
        *res=append(*res,cpy)
        return
    }
    if len(graph[temp])==0{
        return
    }
    for _,v:=range graph[temp]{
        *path=append(*path,v)
        dfs797(graph,path,res)
        *path=(*path)[:len(*path)-1]
    }
}

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