Serailize and Deserialize N-Ary Tree | Leetcode Solution

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I have implemented the deserialize function using a stack and it worked for all test cases on nados:

public static Node deserialize(String str) {
String[] arr=str.split(", ");
Stack<Node> st=new Stack<>();
Node root=new
st.push(root);
int i=1;
while(st.size()>0 && i<arr.length){
Node rem=st.peek();
if(st.size()>1 && rem==null){
st.pop();
st.pop(); //removing the null value and the value that has no children
}else{
if(arr[i].equals("null")){
st.push(null);
continue;
}
Node child=new
rem.children.add(child); //adding the next number as child of current st.peek()
st.push(child);
}
i++; //moving to next number
}
return root;
}

architsharma

sir your videos are best .please teach dynamic programic from basic to advance .

soumya

sir yha pr khudka stack banane ka inuition kaise aya, maine khudse dfs lgane mai 30 min bekar kiye the, ye special type ka ques hai kya

mickyman

intro song was expected from pepcoding😂

brutal

Trees ki kitni videos dalni baaki hai abhi level 2 me?

mridulgupta

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