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Copy pathSolution.cs
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38 lines (35 loc) · 842 Bytes
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Solution.cs
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38 lines (35 loc) · 842 Bytes
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/*
// Definition for a Node.
public class Node {
public int val;
public Node next;
public Node random;
public Node(int _val) {
val = _val;
next = null;
random = null;
}
}
*/
public class Solution
{
public Node CopyRandomList(Node head)
{
if (head is null) return head;
Dictionary<Node, Node> map = [];
Node curr = head;
while (curr is not null)
{
map[curr] = new Node(curr.val);
curr = curr.next;
}
foreach (var kvp in map)
{
Node dist = kvp.Value;
Node source = kvp.Key;
dist.next = source.next is not null ? map[source.next] : null;
dist.random = source.random is not null ? map[source.random] : null;
}
return map[head];
}
}