Queue Operations (FIFO)
C++
Easy
4 views
Problem Description
Use queue - First In First Out data structure.
Real Life: Like queue at ticket counter - first come first serve.
Step-by-Step Logic:
1. Create queue
2. Push adds to rear
3. Front shows first element
4. Pop removes first element
5. Like people waiting in line
Official Solution
void stl_q3_queue() {
queue<int> q;
// Add elements
q.push(10);
q.push(20);
q.push(30);
cout << "Queue front: " << q.front() << endl;
cout << "Queue size: " << q.size() << endl;
// Remove elements
while(!q.empty()) {
cout << "Removing: " << q.front() << endl;
q.pop();
}
}
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