BFS-style queue demo with 7 items.
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using System;
class Program
{
static void Main()
{
var q = new System.Collections.Generic.Queue<int>();
for (int k = 1; k <= 7; k++) q.Enqueue(k);
Console.WriteLine(q.Dequeue());
}
}Prefer Coach (Nudge → Guide → Approach) before revealing. No forced signup.
Queue FIFO — BFS uses queues.
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