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2 months ago
198 B
1
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Never
void rev(queue<int> &q){ if(q.empty()) return; int a=q.front(); q.pop(); rev(q); q.push(a); } queue<int> reverseQueue(queue<int> q) { rev(q); return q; }
void rev(queue<int> &q){ if(q.empty()) return; int a=q.front(); q.pop(); rev(q); q.push(a); } queue<int> reverseQueue(queue<int> q) { rev(q); return q; }